Podcast: Indigenous, ingenious and sustainable aquaculture from the distant past to today

On today’s episode of the Mongabay Newscast we look at Indigenous peoples’ long relationship with, and stewardship of, marine environments through two stories of aquaculture practice and research.Nicola MacDonald joins us to discuss Kōhanga Kūtai, a project in New Zealand that aims to replace the plastic ropes used by mussel farmers with more sustainable alternatives. MacDonald discusses the project’s blending of traditional Maori knowledge with Western science.We also speak with Dana Lepofsky, a professor in the archaeology department at Simon Fraser University in British Columbia, Canada, who shares her research upon clam gardens along the Pacific coast of North America. Some of these clam gardens have been found to be at least 3,500 years old, and were such a reliable and sustainable source of food that there’s a movement afoot to rebuild them today. On this episode we discuss Indigenous peoples’ long relationship with — and stewardship of — marine environments through the lens of aquaculture.
Listen here:

Coastal cultures have often enjoyed abundant lifestyles thanks to the wide array of food, fiber, and other useful resources provided by the world’s seas, sounds, estuaries and oceans. Indigenous peoples have also developed strong marine conservation traditions and ingenious methods of ensuring sustainable long-term harvests through practices commonly called ‘aquaculture’ today.
We hear from Nicola MacDonald about Kōhanga Kūtai, a project in New Zealand that aims to replace the plastic ropes used by mussel farmers with more sustainable alternatives. MacDonald tells us about her community’s marine conservation ethic and the mussel project’s basis in blending traditional Maori knowledge with Western science.
We also speak with Dana Lepofsky, a professor in the archaeology department at Simon Fraser University in British Columbia, Canada. Lepofsky tells us about her research into clam gardens on the Pacific coast of North America, some of which have been found to be 3,500 years old, or older. These clam gardens were such a reliable and sustainable source of food that there’s a movement afoot to rebuild them today.
Further reading:
• “‘We have a full pharmacopoeia of plants’: Q&A with Māori researcher Nicola Macdonald” (18 March 2022)
• The Clam Garden Network website
• Smith, N. F., Lepofsky, D., Toniello, G., Holmes, K., Wilson, L., Neudorf, C. M., & Roberts, C. (2019). 3500 years of shellfish mariculture on the Northwest Coast of North America. PloS one, 14(2), e0211194. doi:10.1371/journal.pone.0211194
Nicola Macdonald, a Māori researcher and chief executive of the Ngāti Manuhiri Settlement Trust. Image courtesy of Nicola Macdonald.
Ancient clam garden. Image courtesy of John Harper/Clam Garden Network.
Subscribe to the Mongabay Newscast wherever you get your podcasts from! You can also listen to all episodes here on the Mongabay website. Or you can download our app for Apple and Android devices to gain fingertip access to new shows and all our previous episodes.
Harakeke muka [extracted fibers] which have been prepared for weaving into rope. Image courtesy of Nicola Macdonald.
Further listening on this topic: On episode #137 Dune Lankard of Native Conservancy discussed their kelp aquaculture project in Alaska:
• “Podcast: Kelp, condors and Indigenous conservation”

Green-lipped mussels are endemic to New Zealand and are commonly grown in aquaculture operations. Image courtesy of Adrian Midgley via Flickr (CC BY-NC-ND 2.0).
Follow host Mike Gaworecki on Twitter: @mikeg2001
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Indigenous oyster fisheries were ‘fundamentally different’: Q&A with researcher Marco Hatch

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Op-Ed: Closing the plastic tap

In March, the United Nations’ Environment Assembly adopted a landmark resolution, supported by 175 countries, to end plastic pollution with a legally binding treaty. Negotiations, expected to take two years, began this week. As a group of nine international experts on plastic pollution from eight countries, we’ve recently argued in a letter to the journal Science that this treaty must cap plastic production and regulate the chemicals they contain. Here’s why.

Plastic impacts on future generations

In the past 100 years, humanity has introduced an immense amount and variety of new chemicals and plastics to the planet. The current global plastic production is roughly 450 million tons per year. If we add up all the plastics produced so far, their weight would surpass the mass of all land and marine animals. Annual production is predicted to double by 2045, when today’s preschoolers are adults. They will likely live in a world of fragile ecosystems and a changing climate. If plastic pollution continues unabated, it will exacerbate these problems.

Plastics are now found in oceans, rivers, lakes, air, ice and soil. Scientists have identified tiny pieces of plastics in the human digestive system, blood stream, lungs and even the placenta. While we do not fully understand the impacts of this exposure, these findings are highly concerning. Chemical additives used in plastics include BPA, flame retardants, phthalates and thousands of other chemicals, many of which are toxic and have been linked to cancer, infertility, brain damage and other serious human health conditions.
Plastics and chemicals have already altered vital Earth’s system processes to an extent that exceeds the threshold under which humanity can safely develop and thrive in the future. Plastics contain tens of thousands of chemical additives, as well as non-intentionally added substances. It’s impossible to ensure the safety of this large variety of substances, mixed in a myriad of different ways.

Plastic’s climate change impacts 

The life cycle of plastic also has serious climate impacts. It accounts for 4.5% of the annual greenhouse gas emissions and could consume 10% to 13% of our remaining carbon dioxide budget by 2050. This is in part because single-use plastics are heavily produced in countries dependent on coal.As the world shifts to renewable energy sources, the fossil fuel industry is looking to increase plastics production. Plastic producers have been expanding their capacities by up to 40%, with $180 billion invested in fracking (which produces ethylene, a critical ingredient in various plastics), and in plastic production.There are many other, yet largely unexplored ways in which plastics could impact the Earth’s system. They could affect the amount of sunlight reflected back to space in the Arctic. Or they could change the carbon dioxide sequestration by phytoplankton and the marine carbon pump, which is part of the ocean carbon cycle responsible for cycling of organic matter formed by phytoplankton during photosynthesis. Plastics could also alter essential nutrient cycling functions of soils on land.

“Wish cycling” 

It is clear that we need to reduce plastics now. We cannot afford to become yet more dependent on historically flawed and insufficient strategies of downstream waste management.Even high-income countries are ill-equipped to keep pace with the growing amount of waste. Recycling is often just “wish-cycling,” as environmental sociologist Rebecca Altman puts it. Recycling rates are as low as 5% in the United States and average only 9% globally. Sometimes recycling is simply a global redistribution of waste. Millions of tons of plastic waste are still exported from the Global North to the Global South. The toxic waste of these exports frequently ends up disposed of by vulnerable communities, who carry the burden of pollution. Scholars have identified this as a form of colonialism.The idea of a circular economy hasn’t worked in practice and would be difficult to implement on the large scale needed. Yet the steep increase in plastic production isn’t challenged enough. As a result, more and more plastics and toxic compounds are leaking into all corners of the environment and into our bodies.Unfortunately, this isn’t a mess we can clean up later. Breaking down into micro and nanoparticles, it’s a form of pollution that is irretrievable and irreversible. Trying to sift it up is a Sisyphean task that might endanger crucial ecosystems, such as the neuston – tiny organisms floating with ocean currents to areas where plastic waste accumulates.

Phasing out virgin plastics

Recycling rates are as low as 5% in the United States and average only 9% globally. (Credit: Lisa Risager/flickr) Even when applying all political and technological solutions available today — including substitution, improved recycling, waste management and circularity — annual plastic emissions to the environment can only be cut by 79% over 20 years, a study of scenarios in the journal Science found. It also suggests that, even with these actions, after 2040 17.3 million tons of plastic waste will still be released to the environment yearly. The path forward must include a phase-out of virgin plastic production by 2040.In calling for a production cap, we do not discount the benefits that plastics present in healthcare or transportation. We are mindful of the possibilities that plastics engender in low-income countries or for disability communities. We do not envision a future without plastics, but one with much less of it, just for the applications that are necessary or vital for vulnerable populations. For all remaining plastics we need a robust circular economy that regulates toxic plastic chemicals as well, keeping them out of the loop to ensure human and environmental safety. A reduced production of new plastics would likely boost the value of recycled feedstock, incentivizing recycling. If justly regulated, this would secure socioeconomic benefits and operational safety for millions of workers across the world, who draw a living removing and renewing plastic waste. The new plastic treaty could create opportunities for innovation in technology, society, science and policy-making — bringing together citizens, scientists, industry and governments alike. We hope that it will be strong, binding and creative, bravely tackling the true roots of the issue.This article is a collaborative work of the authors together, find their bios here.Banner photo: Celebrating the UN resolution on plastic, which passed in March 2022. (Credit: UNEP)From Your Site ArticlesRelated Articles Around the Web

Op-Ed: Closing the plastic tap

In March, the United Nations’ Environment Assembly adopted a landmark resolution, supported by 175 countries, to end plastic pollution with a legally binding treaty. Negotiations, expected to take two years, began this week. As a group of nine international experts on plastic pollution from eight countries, we’ve recently argued in a letter to the journal Science that this treaty must cap plastic production and regulate the chemicals they contain. Here’s why.

Plastic impacts on future generations

In the past 100 years, humanity has introduced an immense amount and variety of new chemicals and plastics to the planet. The current global plastic production is roughly 450 million tons per year. If we add up all the plastics produced so far, their weight would surpass the mass of all land and marine animals. Annual production is predicted to double by 2045, when today’s preschoolers are adults. They will likely live in a world of fragile ecosystems and a changing climate. If plastic pollution continues unabated, it will exacerbate these problems.

Plastics are now found in oceans, rivers, lakes, air, ice and soil. Scientists have identified tiny pieces of plastics in the human digestive system, blood stream, lungs and even the placenta. While we do not fully understand the impacts of this exposure, these findings are highly concerning. Chemical additives used in plastics include BPA, flame retardants, phthalates and thousands of other chemicals, many of which are toxic and have been linked to cancer, infertility, brain damage and other serious human health conditions.
Plastics and chemicals have already altered vital Earth’s system processes to an extent that exceeds the threshold under which humanity can safely develop and thrive in the future. Plastics contain tens of thousands of chemical additives, as well as non-intentionally added substances. It’s impossible to ensure the safety of this large variety of substances, mixed in a myriad of different ways.

Plastic’s climate change impacts 

The life cycle of plastic also has serious climate impacts. It accounts for 4.5% of the annual greenhouse gas emissions and could consume 10% to 13% of our remaining carbon dioxide budget by 2050. This is in part because single-use plastics are heavily produced in countries dependent on coal.As the world shifts to renewable energy sources, the fossil fuel industry is looking to increase plastics production. Plastic producers have been expanding their capacities by up to 40%, with $180 billion invested in fracking (which produces ethylene, a critical ingredient in various plastics), and in plastic production.There are many other, yet largely unexplored ways in which plastics could impact the Earth’s system. They could affect the amount of sunlight reflected back to space in the Arctic. Or they could change the carbon dioxide sequestration by phytoplankton and the marine carbon pump, which is part of the ocean carbon cycle responsible for cycling of organic matter formed by phytoplankton during photosynthesis. Plastics could also alter essential nutrient cycling functions of soils on land.

“Wish cycling” 

It is clear that we need to reduce plastics now. We cannot afford to become yet more dependent on historically flawed and insufficient strategies of downstream waste management.Even high-income countries are ill-equipped to keep pace with the growing amount of waste. Recycling is often just “wish-cycling,” as environmental sociologist Rebecca Altman puts it. Recycling rates are as low as 5% in the United States and average only 9% globally. Sometimes recycling is simply a global redistribution of waste. Millions of tons of plastic waste are still exported from the Global North to the Global South. The toxic waste of these exports frequently ends up disposed of by vulnerable communities, who carry the burden of pollution. Scholars have identified this as a form of colonialism.The idea of a circular economy hasn’t worked in practice and would be difficult to implement on the large scale needed. Yet the steep increase in plastic production isn’t challenged enough. As a result, more and more plastics and toxic compounds are leaking into all corners of the environment and into our bodies.Unfortunately, this isn’t a mess we can clean up later. Breaking down into micro and nanoparticles, it’s a form of pollution that is irretrievable and irreversible. Trying to sift it up is a Sisyphean task that might endanger crucial ecosystems, such as the neuston – tiny organisms floating with ocean currents to areas where plastic waste accumulates.

Phasing out virgin plastics

Recycling rates are as low as 5% in the United States and average only 9% globally. (Credit: Lisa Risager/flickr) Even when applying all political and technological solutions available today — including substitution, improved recycling, waste management and circularity — annual plastic emissions to the environment can only be cut by 79% over 20 years, a study of scenarios in the journal Science found. It also suggests that, even with these actions, after 2040 17.3 million tons of plastic waste will still be released to the environment yearly. The path forward must include a phase-out of virgin plastic production by 2040.In calling for a production cap, we do not discount the benefits that plastics present in healthcare or transportation. We are mindful of the possibilities that plastics engender in low-income countries or for disability communities. We do not envision a future without plastics, but one with much less of it, just for the applications that are necessary or vital for vulnerable populations. For all remaining plastics we need a robust circular economy that regulates toxic plastic chemicals as well, keeping them out of the loop to ensure human and environmental safety. A reduced production of new plastics would likely boost the value of recycled feedstock, incentivizing recycling. If justly regulated, this would secure socioeconomic benefits and operational safety for millions of workers across the world, who draw a living removing and renewing plastic waste. The new plastic treaty could create opportunities for innovation in technology, society, science and policy-making — bringing together citizens, scientists, industry and governments alike. We hope that it will be strong, binding and creative, bravely tackling the true roots of the issue.This article is a collaborative work of the authors together, find their bios here.Banner photo: Celebrating the UN resolution on plastic, which passed in March 2022. (Credit: UNEP)From Your Site ArticlesRelated Articles Around the Web

A year since X-Press Pearl sinking, Sri Lanka is still waiting for compensation

The sinking a year ago of the cargo vessel the X-Press Pearl was responsible for the single worst incident of plastic marine pollution in the world, according to a committee assessing the damages from the disaster.The ship caught fire off Colombo and eventually sank, leaking its cargo that contained 25 metric tons of nitric acid and some 50 billion plastic pellets.A year later, pellets are still washing up on shore and being cleared away by volunteers, while Sri Lanka tries to claim damages from the ship’s Singapore-based operators.It has received $3.7 million as initial compensation, but experts say the full compensation for the environmental damage could be as high as $7 billion — a figure that would be a lifeline for Sri Lanka as it experiences the worst economic crisis in its history. COLOMBO — A year since the sinking of the cargo ship the X-Press Pearl, Sri Lanka continues to clean its beaches of the plastic pellets that the vessel was carrying, and still trying to claim compensation for the environmental damage wrought.
An expert committee investigating the extent of damage to the country’s marine and coastal environment has now concluded the disaster to be the worst in terms of chemical and plastic pollution of the sea. That’s according to Ajith de Alwis, co-chair of the X-Press Pearl damage assessment committee and a professor of chemical and process engineering at the University of Moratuwa.
The committee has submitted its assessment report to the Attorney General’s Office for use in claiming compensation from the Singapore-based operators of the ship.
“However, the report is only the first edition of the damage assessment, and further assessments would continue based on the monitoring,” De Alwis told Mongabay.
Maritime law expert Dan Malika Gunasekera said Sri Lankan authorities have taken a long time to file for compensation and are reluctant to go through years of strenuous legal battles in international courts. Sri Lanka has obtained an interim payment of $3.7 million in damages, but the country could claim as much as $5 billion to $7 billion, according to Gunasekera.
With Sri Lanka currently mired in the worst economic crisis in the country’s history, those higher numbers would prove a much-needed injection of foreign currency. But further delays would diminish the cash-strapped island’s chance of getting sufficient compensation for the environmental damage, Gunasekera told Mongabay.
Salvation work is underway to raise the wreck of the X-Press Pearl and dismantle it. Image courtesy of X-Press Feeders.
Worst plastic marine pollution event
X-Press Pearl was carrying 1,486 containers when it caught fire off Colombo on May 20, 2021, and began sinking. Eighty-one of the containers were labeled hazardous, and the cargo included 25 metric tons of nitric acid — a key ingredient in the production of explosives, and touted as a possible factor for the fire. There were several explosions, and it took more than a week to bring the fire under control. Attempts to tow the vessel to deeper waters failed, and the freighter finally sank on June 2, 2021, a few kilometers off Sri Lanka’s western coast.
The ship was also carrying 400 containers of nurdles, the plastic pellets from which all manufactured plastic goods are made. The spill of the more than 50 billion pellets made this the worst plastic marine pollution event in the world, with the pellets quickly spreading along the beaches of Sri Lanka’s western coast.
The sinking of the X-Press Pearl cargo ship has resulted in the world’s single worst incident of plastic marine pollution. Image courtesy of the U.N. Advisory Mission Report.
The government carried out an initial cleanup of the beaches, but subsequent cleaning was done by volunteers like the Pearl Protectors, a youth organization.
“We had 28 major cleaning operations on main beaches and could collect as much as 1,500 kilograms [3,300 pounds] of nurdles,” said Muditha Katuwawala, coordinator of the Pearl Protectors.
But more nurdles keep washing up on the beaches, and with the island currently experiencing the southwest monsoon, nurdles that had initially sunk to the seabed or were trapped in underwater structures such as corals have been washed free and are making landfall.
“So it needs to be continuous work” cleaning up the beaches, Katuwawala said.
The Pearl Protectors, like other volunteer organizations around the program, are suffering from the economic crisis. The cost of organizing has doubled in the span of the last few months, with inflation hitting a record 39% in May. The country has defaulted on loan payments for the first time, while the local currency, the rupee, has nosedived against the U.S. dollar.
A container from the X-Press Pearl floating in the sea. Image courtesy of the Sri Lankan Marine Environment Protection Agency (MEPA).
Salvage operation
As for the wreck of the X-Press Pearl, it’s now being salvaged by the Shanghai Salvage Company (SSC), which was handed the task by the ship’s owners, Singapore-based X-Press Feeders. In a statement, X-Press Feeders said the salvage operation includes round-the-clock monitoring to deal with debris or other pollutants that may get dislodged during the operation. It also said regular water sampling will be carried out at the site, and that any oil spills will be responded to immediately.
According to SSC, the X-Press Pearl’s hull has essentially broken in half, so the wreck will be recovered as two separate sections. Operations were suspended at the end of April due to rough seas caused by the southwest monsoon.
Cleanly separating the two halves of the hull is due to start in November, after the monsoon, while the actual lifting is expected to begin in February 2023. The final phase, to be completed by September 2023, will see the wreck completely dismantled, recycled, and disposed of.
Nurdle displacement after the X-Press Pearl marine disaster. Image courtesy of the U.N. Advisory Mission Report.
Lack of baseline studies
Terney Pradeep Kumara, a marine biologist who previously headed Sri Lanka’s Marine Environment Protection Agency (MEPA), said it’s important to collect data during the salvation operation that can serve as evidence linking the environmental pollution to the X-Press Pearl. In the aftermath of the ship accident, marine biologists noted an unusually high number of sea turtle mortalities, which they suspect was the result of the pollution, but for which they currently lack definitive evidence.
‘Not having a baseline of the environmental conditions has been one of the biggest challenges in doing this environmental assessment,” said Prasanthi Gunawardene, the other co-chair of the X-Press Pearl damage assessment committee. There were about 30 different subcommittees with members from different fields, and getting input from different government agencies in the monitoring process was a challenge, Gunawardene told Mongabay.

Banner image of a cluster of nurdles found on Sri Lanka’s southern coast. Seabirds and crows often mistake these nurdles for food, because they resemble fish eggs. Image courtesy of the Pearl Protectors.
 

A year since X-Press Pearl sinking, Sri Lanka is still waiting for compensation

The sinking a year ago of the cargo vessel the X-Press Pearl was responsible for the single worst incident of plastic marine pollution in the world, according to a committee assessing the damages from the disaster.The ship caught fire off Colombo and eventually sank, leaking its cargo that contained 25 metric tons of nitric acid and some 50 billion plastic pellets.A year later, pellets are still washing up on shore and being cleared away by volunteers, while Sri Lanka tries to claim damages from the ship’s Singapore-based operators.It has received $3.7 million as initial compensation, but experts say the full compensation for the environmental damage could be as high as $7 billion — a figure that would be a lifeline for Sri Lanka as it experiences the worst economic crisis in its history. COLOMBO — A year since the sinking of the cargo ship the X-Press Pearl, Sri Lanka continues to clean its beaches of the plastic pellets that the vessel was carrying, and still trying to claim compensation for the environmental damage wrought.
An expert committee investigating the extent of damage to the country’s marine and coastal environment has now concluded the disaster to be the worst in terms of chemical and plastic pollution of the sea. That’s according to Ajith de Alwis, co-chair of the X-Press Pearl damage assessment committee and a professor of chemical and process engineering at the University of Moratuwa.
The committee has submitted its assessment report to the Attorney General’s Office for use in claiming compensation from the Singapore-based operators of the ship.
“However, the report is only the first edition of the damage assessment, and further assessments would continue based on the monitoring,” De Alwis told Mongabay.
Maritime law expert Dan Malika Gunasekera said Sri Lankan authorities have taken a long time to file for compensation and are reluctant to go through years of strenuous legal battles in international courts. Sri Lanka has obtained an interim payment of $3.7 million in damages, but the country could claim as much as $5 billion to $7 billion, according to Gunasekera.
With Sri Lanka currently mired in the worst economic crisis in the country’s history, those higher numbers would prove a much-needed injection of foreign currency. But further delays would diminish the cash-strapped island’s chance of getting sufficient compensation for the environmental damage, Gunasekera told Mongabay.
Salvation work is underway to raise the wreck of the X-Press Pearl and dismantle it. Image courtesy of X-Press Feeders.
Worst plastic marine pollution event
X-Press Pearl was carrying 1,486 containers when it caught fire off Colombo on May 20, 2021, and began sinking. Eighty-one of the containers were labeled hazardous, and the cargo included 25 metric tons of nitric acid — a key ingredient in the production of explosives, and touted as a possible factor for the fire. There were several explosions, and it took more than a week to bring the fire under control. Attempts to tow the vessel to deeper waters failed, and the freighter finally sank on June 2, 2021, a few kilometers off Sri Lanka’s western coast.
The ship was also carrying 400 containers of nurdles, the plastic pellets from which all manufactured plastic goods are made. The spill of the more than 50 billion pellets made this the worst plastic marine pollution event in the world, with the pellets quickly spreading along the beaches of Sri Lanka’s western coast.
The sinking of the X-Press Pearl cargo ship has resulted in the world’s single worst incident of plastic marine pollution. Image courtesy of the U.N. Advisory Mission Report.
The government carried out an initial cleanup of the beaches, but subsequent cleaning was done by volunteers like the Pearl Protectors, a youth organization.
“We had 28 major cleaning operations on main beaches and could collect as much as 1,500 kilograms [3,300 pounds] of nurdles,” said Muditha Katuwawala, coordinator of the Pearl Protectors.
But more nurdles keep washing up on the beaches, and with the island currently experiencing the southwest monsoon, nurdles that had initially sunk to the seabed or were trapped in underwater structures such as corals have been washed free and are making landfall.
“So it needs to be continuous work” cleaning up the beaches, Katuwawala said.
The Pearl Protectors, like other volunteer organizations around the program, are suffering from the economic crisis. The cost of organizing has doubled in the span of the last few months, with inflation hitting a record 39% in May. The country has defaulted on loan payments for the first time, while the local currency, the rupee, has nosedived against the U.S. dollar.
A container from the X-Press Pearl floating in the sea. Image courtesy of the Sri Lankan Marine Environment Protection Agency (MEPA).
Salvage operation
As for the wreck of the X-Press Pearl, it’s now being salvaged by the Shanghai Salvage Company (SSC), which was handed the task by the ship’s owners, Singapore-based X-Press Feeders. In a statement, X-Press Feeders said the salvage operation includes round-the-clock monitoring to deal with debris or other pollutants that may get dislodged during the operation. It also said regular water sampling will be carried out at the site, and that any oil spills will be responded to immediately.
According to SSC, the X-Press Pearl’s hull has essentially broken in half, so the wreck will be recovered as two separate sections. Operations were suspended at the end of April due to rough seas caused by the southwest monsoon.
Cleanly separating the two halves of the hull is due to start in November, after the monsoon, while the actual lifting is expected to begin in February 2023. The final phase, to be completed by September 2023, will see the wreck completely dismantled, recycled, and disposed of.
Nurdle displacement after the X-Press Pearl marine disaster. Image courtesy of the U.N. Advisory Mission Report.
Lack of baseline studies
Terney Pradeep Kumara, a marine biologist who previously headed Sri Lanka’s Marine Environment Protection Agency (MEPA), said it’s important to collect data during the salvation operation that can serve as evidence linking the environmental pollution to the X-Press Pearl. In the aftermath of the ship accident, marine biologists noted an unusually high number of sea turtle mortalities, which they suspect was the result of the pollution, but for which they currently lack definitive evidence.
‘Not having a baseline of the environmental conditions has been one of the biggest challenges in doing this environmental assessment,” said Prasanthi Gunawardene, the other co-chair of the X-Press Pearl damage assessment committee. There were about 30 different subcommittees with members from different fields, and getting input from different government agencies in the monitoring process was a challenge, Gunawardene told Mongabay.

Banner image of a cluster of nurdles found on Sri Lanka’s southern coast. Seabirds and crows often mistake these nurdles for food, because they resemble fish eggs. Image courtesy of the Pearl Protectors.
 

‘The smoke enters your body': A toxic trash site in Kenya is making women sick

This story is a collaboration between VICE World News and The Fuller Project.DANDORA, Kenya– As Winnie Wanjira rifles through mountains of waste at the Dandora dump in Nairobi, it’s not the discarded needles that most bother her. Nor the metal scraps that could shred her skin like paper. It’s not even the hot sun that beats down on the rancid rubbish, making the 36-year-old feel so dizzy she struggles to fill her sack with plastic bottles. Today, the mother of six is anxious about her period. It’s heavy, she says. So heavy she spent the last two days lying down in her windowless, single-bedroom home, unable to move. “The bleeding… is no joke,” she tells The Fuller Project and VICE World News. “I cannot come to work, I cannot go anywhere.” Joyce Wangari (left) and Winnie Wanjira are fighting to protect waste pickers’ rights. Now, on the third day, she’s back, hoping the jumper tied around her waist will cover any stains. “And it’s, like, black, not even the normal colour of periods,” she says. “That place… It kills. It really kills.”As far back as 2007, the United Nations Environment Program warned that Dandora posed a serious health threat to those working and living nearby. Yet while it is understood that exposure to the toxic chemicals found on dumpsites can result in cancer, respiratory problems and skin infections, scientists and environmental campaigners say relatively little attention has been paid to their impact on the reproductive health of waste pickers, who are often women. Materials such as plastic and e-waste contain a cocktail of chemicals that studies show can disturb the body’s hormone systems. As ever-higher volumes of trash continue to end up in landfills, informal workers like Wanjira will be on the front lines of what scientists are calling an emerging issue of global concern.Most waste pickers handle trash without gloves or masks and often live near or on the dumpsites, which intensifies their exposure to health risks.For years, acrid smoke has billowed across this sprawling dumpsite, which covers an area of the Kenyan capital the size of 22 football pitches. On windy days, clouds of smoke engulf the nearby neighbourhoods. “You can’t breathe,” a woman who works in a nearby pharmacy tells The Fuller Project and VICE World News. It’s not just an issue at Dandora. Across Kenya’s dumpsites, a potentially toxic mix of everything from empty milk cartons to old tyres are being destroyed through open burning, according to a 2017 report by the government and the United Nations. Around the world, many of the estimated 20 million waste pickers in countries such as India, Ghana and Vietnam likely face similar health concerns. Estimates vary, but studies show this informal workforce is often mostly women.“This is a global problem,” says Griffins Ochieng, executive director for the Centre for Environmental Justice and Development (CEJAD), a Nairobi-based nonprofit focusing on the problem of plastic waste. “Any dumpsite – anywhere there is plastic pollution – women will be impacted.” This is because many materials that end up as waste contain toxic substances. Plastics and e-waste are known to contain and leach hazardous chemicals into the environment, including endocrine-disrupting chemicals (EDCs), which have been linked to reduced fertility, pregnancy loss and irregular menstrual cycles, among many other conditions. Burning them releases or generates a number of highly toxic chemicals and heavy metals, with reported similar effects. The toxins are not only in the air but also in the soil and water, and for the many waste pickers who eat from the landfills, in their food, too.While men frequently take on more supervisory roles, women often spend the entire day rummaging, says Ochieng. “They’re in the thick of things… but the environment is a threat to their human health.”For years, acrid smoke has billowed across Dandora, often engulfing the surrounding neighbourhood on windy days.Globally, the amount of trash we produce – and where to put it – is a growing problem. Each year, the world generates 2.01 billion tonnes of household waste, the equivalent of more than 6,000 Empire State Buildings being collectively chucked out every 12 months. By 2050, the number is set to rise by more than 70 percent. In low-income countries, over 90 percent of waste is either dumped in the open or burned. It’s why waste pickers, like Wanjira, are often described as the backbone of waste and recycling industries. They’ve stepped in, an informal, often invisible workforce relied upon by governments in parts of Latin America and Asia and across Africa. Spending long days bent over, picking up and sorting waste discarded in streets and dumpsites, they recover more recyclable materials than formal waste management systems yet represent some of society’s most marginalised populations. In Kenya, roughly 3,000 to 5,000 waste pickers scatter across Dandora’s hills every day. Around the country, local organisations estimate the numbers reach nearly 50,000, although there is no official total.If Wanjira’s heavy, painful period had been a one-off, she might have been a little less worried. But she’s faced the same issue – often twice a month – for roughly 20 years, she says. When Wanjira was about 13 and her family could no longer afford school fees, she dropped out and started working with her mother, Jane, who was also a waste picker. Within several years, Wanjira’s problems with her menstruation started, she says. She’s not alone. In interviews with 32 women across Dandora and Gioto, another vast dumpsite in Nakuru, a three-hour drive from Nairobi, 21 women said their periods are irregular. Many, like Wanjira, face very heavy, painful periods once or twice a month. Others wait eight months for theirs. One in three say they have suffered serious issues when pregnant, including miscarriage, stillbirth and premature birth. About 10 to 15 percent of pregnancies worldwide end in miscarriage, according to March of Dimes, an organisation that works on pregnancy and postpartum health, while stillbirth and premature birth are much rarer.One 59-year-old woman who has worked at Dandora for nearly three decades is being treated for uterine cancer. “We hear these issues all the time,” says Joyce Wangari, a 23-year-old waste picker who has worked at Dandora since she was 12. She only gets her periods every two to three months. “It’s so common.”

‘The smoke enters your body': A toxic trash site in Kenya is making women sick

This story is a collaboration between VICE World News and The Fuller Project.DANDORA, Kenya– As Winnie Wanjira rifles through mountains of waste at the Dandora dump in Nairobi, it’s not the discarded needles that most bother her. Nor the metal scraps that could shred her skin like paper. It’s not even the hot sun that beats down on the rancid rubbish, making the 36-year-old feel so dizzy she struggles to fill her sack with plastic bottles. Today, the mother of six is anxious about her period. It’s heavy, she says. So heavy she spent the last two days lying down in her windowless, single-bedroom home, unable to move. “The bleeding… is no joke,” she tells The Fuller Project and VICE World News. “I cannot come to work, I cannot go anywhere.” Joyce Wangari (left) and Winnie Wanjira are fighting to protect waste pickers’ rights. Now, on the third day, she’s back, hoping the jumper tied around her waist will cover any stains. “And it’s, like, black, not even the normal colour of periods,” she says. “That place… It kills. It really kills.”As far back as 2007, the United Nations Environment Program warned that Dandora posed a serious health threat to those working and living nearby. Yet while it is understood that exposure to the toxic chemicals found on dumpsites can result in cancer, respiratory problems and skin infections, scientists and environmental campaigners say relatively little attention has been paid to their impact on the reproductive health of waste pickers, who are often women. Materials such as plastic and e-waste contain a cocktail of chemicals that studies show can disturb the body’s hormone systems. As ever-higher volumes of trash continue to end up in landfills, informal workers like Wanjira will be on the front lines of what scientists are calling an emerging issue of global concern.Most waste pickers handle trash without gloves or masks and often live near or on the dumpsites, which intensifies their exposure to health risks.For years, acrid smoke has billowed across this sprawling dumpsite, which covers an area of the Kenyan capital the size of 22 football pitches. On windy days, clouds of smoke engulf the nearby neighbourhoods. “You can’t breathe,” a woman who works in a nearby pharmacy tells The Fuller Project and VICE World News. It’s not just an issue at Dandora. Across Kenya’s dumpsites, a potentially toxic mix of everything from empty milk cartons to old tyres are being destroyed through open burning, according to a 2017 report by the government and the United Nations. Around the world, many of the estimated 20 million waste pickers in countries such as India, Ghana and Vietnam likely face similar health concerns. Estimates vary, but studies show this informal workforce is often mostly women.“This is a global problem,” says Griffins Ochieng, executive director for the Centre for Environmental Justice and Development (CEJAD), a Nairobi-based nonprofit focusing on the problem of plastic waste. “Any dumpsite – anywhere there is plastic pollution – women will be impacted.” This is because many materials that end up as waste contain toxic substances. Plastics and e-waste are known to contain and leach hazardous chemicals into the environment, including endocrine-disrupting chemicals (EDCs), which have been linked to reduced fertility, pregnancy loss and irregular menstrual cycles, among many other conditions. Burning them releases or generates a number of highly toxic chemicals and heavy metals, with reported similar effects. The toxins are not only in the air but also in the soil and water, and for the many waste pickers who eat from the landfills, in their food, too.While men frequently take on more supervisory roles, women often spend the entire day rummaging, says Ochieng. “They’re in the thick of things… but the environment is a threat to their human health.”For years, acrid smoke has billowed across Dandora, often engulfing the surrounding neighbourhood on windy days.Globally, the amount of trash we produce – and where to put it – is a growing problem. Each year, the world generates 2.01 billion tonnes of household waste, the equivalent of more than 6,000 Empire State Buildings being collectively chucked out every 12 months. By 2050, the number is set to rise by more than 70 percent. In low-income countries, over 90 percent of waste is either dumped in the open or burned. It’s why waste pickers, like Wanjira, are often described as the backbone of waste and recycling industries. They’ve stepped in, an informal, often invisible workforce relied upon by governments in parts of Latin America and Asia and across Africa. Spending long days bent over, picking up and sorting waste discarded in streets and dumpsites, they recover more recyclable materials than formal waste management systems yet represent some of society’s most marginalised populations. In Kenya, roughly 3,000 to 5,000 waste pickers scatter across Dandora’s hills every day. Around the country, local organisations estimate the numbers reach nearly 50,000, although there is no official total.If Wanjira’s heavy, painful period had been a one-off, she might have been a little less worried. But she’s faced the same issue – often twice a month – for roughly 20 years, she says. When Wanjira was about 13 and her family could no longer afford school fees, she dropped out and started working with her mother, Jane, who was also a waste picker. Within several years, Wanjira’s problems with her menstruation started, she says. She’s not alone. In interviews with 32 women across Dandora and Gioto, another vast dumpsite in Nakuru, a three-hour drive from Nairobi, 21 women said their periods are irregular. Many, like Wanjira, face very heavy, painful periods once or twice a month. Others wait eight months for theirs. One in three say they have suffered serious issues when pregnant, including miscarriage, stillbirth and premature birth. About 10 to 15 percent of pregnancies worldwide end in miscarriage, according to March of Dimes, an organisation that works on pregnancy and postpartum health, while stillbirth and premature birth are much rarer.One 59-year-old woman who has worked at Dandora for nearly three decades is being treated for uterine cancer. “We hear these issues all the time,” says Joyce Wangari, a 23-year-old waste picker who has worked at Dandora since she was 12. She only gets her periods every two to three months. “It’s so common.”

Plastic packaging might be biodegradable after all

Leipzig researchers have found an enzyme that rapidly breaks down PET, the most widely produced plastic in the world. It might just eat your old tote bags.
While scavenging through a compost heap at a Leipzig cemetery, Christian Sonnendecker and his research team found seven enzymes they had never seen before. They were hunting for proteins that would eat PET plastic — the most highly produced plastic in the world. It is commonly used for bottled water and groceries like grapes. The scientists weren’t expecting much when they brought the samples back to the lab, said Sonnendecker when DW visited their Leipzig University laboratory. It was only the second dump they had rummaged through and they thought PET-eating enzymes were rare. But in one of the samples, they found an enzyme, or polyester hydrolase, called PHL7. And it shocked them. The PHL7 enzyme disintegrated an entire piece of plastic in less than a day. To test the rate at which the seven enzymes broke down PET, Sonnendecker and his team added a mixture of water, a phosphate buffer, which is often used to detect bacteria, for example, and the new enzyme to seven individual test tubes After adding the mixture to the test tubes, the team added tiny slivers of PET plastic to each container to see how quickly it took to degrade Two enzymes ‘eat’ plastic: PHL7 vs. LCC PHL7 appears to ‘eat’ PET plastic times faster than LCC, a standard enzyme used in PET plastic-eating experiments today. To ensure their discovery wasn’t a fluke, Sonnendecker’s team compared PHL7 to LCC, with both enzymes degrading multiple plastic containers. And they found it was true: PHL7 was faster. “I would have thought you’d need to sample from hundreds of different sites before you’d find one of these enzymes,” said Graham Howe, an enzymologist at Queens University in Ontario, Canada. Howe, who also studies PET degradation but was not involved in the Leipzig research, appeared to be amazed by the study published in Chemistry Europe. “Apparently, you go to nature and there are going to be enzymes that do this everywhere,” said Howe. PET plastic is everyone Although PET plastic can be recycled, it does not biodegrade. Like nuclear waste or a nasty comment to your partner, once PET plastic is created, it never really goes away. It can be refashioned into new products — it’s not hard to create a tote bag from recycled water bottles, for example. But the quality of the plastic weakens with each cycle. So, a lot of PET is eventually fashioned into products like carpets and — yes — an exorbitant number of tote bags that end up in landfill sites. There are two ways to look at solving this problem: The first is to stop production of all PET plastic. But the material is so common that even if companies stopped producing it immediately, there would still be millions of empty soft drink bottles — or tote bags fashioned from those bottles — lying around for thousands of years. This is what a grape container looks like after it’s been treated with the enzyme PHL7 — the white particles are leftover terephthalic acid and ethylene glycol, chemicals that can be used to create brand new PET rather than a lower quality version The second way is to force the plastic to degrade. Scientists have been trying to find enzymes that will do that for decades and in 2012 they found LCC, or “leaf-branch compost cutinase.” LCC was a major breakthrough because it showed that PETase, a component of LCC, can be used to degrade PET plastic when it is combined with another enzyme known as an esterase. Esterase enzymes are used to break chemical bonds in a process called hydrolysis.   Scientists working on LCC have found that the enzyme does not differentiate between natural polymers and synthetic polymers — the latter being plastic. Instead, LCC recognizes PET plastic as a naturally occurring substance and eats it like it would a natural polymer. Engineering the enzyme Since the discovery of LCC, researchers like Sonnendecker have been looking for new PET-eating enzymes in nature. LCC is good, they say, but it has limitations. It is fast for what it is, but it still takes days to break down PET and the reactions have to occur at very high temperatures. Other scientists and researchers have been trying to figure out how to engineer LCC to make it more efficient. A French company called Carbios is doing that. They are engineering LCC to create a faster, more efficient enzyme. Elsewhere, researchers at the University of Texas in Austin have created a PET-eating protein using a machine learning algorithm. They say their protein can degrade PET plastic in 24 hours. David Zechel, a professor of chemistry at Queen’s University said these approaches always start with something that is known — the researchers don’t necessarily find anything new, but work to improve what has already been discovered. The team are testing a “pre-treatment” that is applied to soft drink bottles, like this one in the jar, before it’s degraded by the enzyme PHL7 This type of engineering is important as researchers try to create the optimal enzyme to degrade PET, said Zechel. Sonnendecker’s work shows that “we haven’t even remotely scratched the surface” in terms of the potential of naturally occurring enzymes “with respect to PET,” he said. Bottles still don’t biodegrade Sonnendecker’s newly discovered enzyme has its limitations, too. It can break down the containers you buy your grapes in at the grocery store, but it can’t break down a soft drink bottle. Not yet. The PET plastic used in drink bottles is stretched and chemically altered, making it tougher to biodegrade than the PET used in grape containers. In tests, Sonnendecker’s team has developed a pre-treatment that is applied to PET bottles, making it easier for the enzyme to degrade the plastic. But that research has yet to be published. With industry help, said the researcher, technology using PHL7 to break down PET at a large scale could be ready in around four years. Edited by: Zulfikar Abbany

New York state is looking for a new solution to plastic waste

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A worker carries used drink bottles and cans for recycling at a collection point in Brooklyn, New York. Three decades of recycling have so far failed to reduce what we throw away, especially plastics.

Ed Jones/AFP via Getty Images

Ed Jones/AFP via Getty Images

After recycling’s failure to appreciably reduce the amount of plastic the U.S. throws away, some states are taking a new approach, transferring the onus of recycling from consumers to product manufacturers. In the past 12 months, legislatures in Maine, Oregon and Colorado have passed “extended producer responsibility” laws on packaging. The legislation essentially forces producers of consumer goods — such as beverage-makers, shampoo companies and food corporations — to pay for the disposal of the packages and containers their products come in. The process is intended to nudge manufacturers to use more easily recyclable materials, compostable packaging or less packaging. Now, the New York legislature is deliberating two extended producer responsibility bills as its session nears its June 2 close. Lobbying by business and environmental groups has been particularly intense around details such as what recycling goals must be met and who sets them. Industry and environmentalists alike believe that when a state as big as New York adopts a law, it creates a template or standard that other states might adopt too.

“I’m exhausted,” said Judith Enck, founder and president of the advocacy group Beyond Plastics, who has been lobbying legislators on the issue. “If you have a state the size of New York get it wrong on extended producer responsibility, it would have a ripple effect on other states.” What would this approach look like? Extended producer responsibility — the ungainly name comes from a 1990 paper by Swedish academics Thomas Lindhqvist and Karl Lidgren — took root in Europe 30 years ago. Many U.S. states have such policies for e-waste and mattresses. But their adoption for packaging is fairly recent in the U.S., and those programs won’t be fully up and running for years. While each state’s legislation varies, the system generally works like this: Beverage companies, shampoo-makers, food manufacturers and other producers will keep track of how much of each sort of packaging they use. These producers will reimburse government recycling programs for handling the waste, either directly or through a consortium called a “producer responsibility organization.” Fees will be lower for companies that use easily recyclable, compostable or even reusable packaging, a mechanism that supporters say will provide incentives to adopt more sustainable practices. Recycling centers will use the money to cover their operating costs, expand outreach and education, and invest in new equipment.
“We think corporations will produce less virgin materials because they are charged by the amount they put out there, and certainly less eco-unfriendly materials,” said New York state Sen. Todd Kaminsky, a Democrat from Long Island who sponsored one of the bills pending in Albany.

Australian study finds microplastics in world's most remote oceans

An Australian man who has circumnavigated the world 11 times in a yacht has used his most recent voyage to collect seawater samples, which scientists now say are proof that microplastics have polluted even the world’s most remote oceans.Key points:Researchers used 177 samples collected by lone sailor Jon Sanders on his 11th circumnavigation voyageThe scientists say microplastics were detected in places that had never been tested, including remote parts of the oceanCurtin University says previous studies had not tested for microplastics in southern oceansResearchers from Curtin University used samples collected by lone sailor Jon Sanders to develop what they described as the first accurate measure of the presence of microplastics in far-flung ocean environments.”The aim of the study was to target areas of the world’s oceans not previously sampled for microplastics and to produce a complete global snapshot of microplastic distribution,” Professor Kliti Grice, the lead researcher on the study, said.”Our analysis found microplastics were present in the vast majority of the waters sampled by Jon, even in very remote ocean areas of the Southern Hemisphere.”Mr Sanders collected hundreds of samples during his expedition, which he completed in January last year, spanning 46,100 kilometres of ocean, including areas that have never been tested for microplastics before.Project initiated by sailor