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Paris Mayor Defies Poo Threats to Swim in Seine, and Prove a Point

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Wednesday, July 17, 2024

On a sunny Wednesday in Paris, the city’s Mayor inches down a ladder into the blue-brown water of the river Seine, one cautious step at a time. After a few seconds, once Anne Hidalgo’s wetsuit is completely submerged, she dons small dark goggles and dunks her face underwater—proving to the photographers and TV cameras following her by boat that she believes this water is clean.This is a historic moment for Paris, which many people believed was not going to happen. Swimming in The Seine has been banned for the past century and a river clean enough for a political photo-op has long been an ambition among French lawmakers.This clean-up operation has become the centerpiece of what Paris is calling “The Greenest Ever Games” and the legacy of this effort is expected to last. After Hidalgo dries off, The Seine will stage several Olympic swimming events before three public bathing areas will open in the Games’ aftermath.But the €1.4 billion ($1.5bn) clean-up operation is not really about swimming. The ability to bathe in The Seine is simply a side show; payback to Parisians for the use of massive public funds to complete such an ambitious river restoration project. Instead, the real goal is to protect a source of drinking water and help life return to the river, so fish—such as the famous Parisian catfish—can continue to thrive.The promise of swimming is intended to guard against the kind of criticism that pits environmental projects against the needs of ordinary people. Online accounts have already pledged to poop in The Seine en masse under the hashtag #JeChieDansLaSeine, or #IPooInTheSeine, to protest the amount of money spent on the project, as ordinary people struggle with the cost of living. (There is no evidence anyone actually did this, and whoever set up the original website did not reply to WIRED’s request for comment.)“Having this totemic goal of swimming in the river is something that really helps politically … because it’s very expensive,” says Caroline Whalley, a water pollution expert at the European Environment Agency. “It's a way to get public support, because they can see the benefit. There's something in it for them.”The Seine started to die at the onset of the 20th century. For 50 years, raw sewage was released into the river, prompting the city to put an end to idyllic scenes of families cavorting in the water, ruling bathing in the water (mostly) illegal from 1923. In the years that followed, The Seine became a grim symbol of industrialization.“There was no life in the river Seine during these 50 years,” says Jean-Marie Mouchel, a professor at the Sorbonne University, who has been studying the river since the 80s. The sewage sapped the water of oxygen and created obstacles for river traffic. “There was so much sediment and deposits from the sewers that [they created] mountains of deposits on the bottom [of the river],” says Mouchel, “so boats couldn't even pass through.”

French politicians’ pledge to make swimming possible in the iconic river is a way to ward off criticism about the cost of the clean up operation.

On a sunny Wednesday in Paris, the city’s Mayor inches down a ladder into the blue-brown water of the river Seine, one cautious step at a time. After a few seconds, once Anne Hidalgo’s wetsuit is completely submerged, she dons small dark goggles and dunks her face underwater—proving to the photographers and TV cameras following her by boat that she believes this water is clean.

This is a historic moment for Paris, which many people believed was not going to happen. Swimming in The Seine has been banned for the past century and a river clean enough for a political photo-op has long been an ambition among French lawmakers.

This clean-up operation has become the centerpiece of what Paris is calling “The Greenest Ever Games” and the legacy of this effort is expected to last. After Hidalgo dries off, The Seine will stage several Olympic swimming events before three public bathing areas will open in the Games’ aftermath.

But the €1.4 billion ($1.5bn) clean-up operation is not really about swimming. The ability to bathe in The Seine is simply a side show; payback to Parisians for the use of massive public funds to complete such an ambitious river restoration project. Instead, the real goal is to protect a source of drinking water and help life return to the river, so fish—such as the famous Parisian catfish—can continue to thrive.

The promise of swimming is intended to guard against the kind of criticism that pits environmental projects against the needs of ordinary people. Online accounts have already pledged to poop in The Seine en masse under the hashtag #JeChieDansLaSeine, or #IPooInTheSeine, to protest the amount of money spent on the project, as ordinary people struggle with the cost of living. (There is no evidence anyone actually did this, and whoever set up the original website did not reply to WIRED’s request for comment.)

“Having this totemic goal of swimming in the river is something that really helps politically … because it’s very expensive,” says Caroline Whalley, a water pollution expert at the European Environment Agency. “It's a way to get public support, because they can see the benefit. There's something in it for them.”

The Seine started to die at the onset of the 20th century. For 50 years, raw sewage was released into the river, prompting the city to put an end to idyllic scenes of families cavorting in the water, ruling bathing in the water (mostly) illegal from 1923. In the years that followed, The Seine became a grim symbol of industrialization.

“There was no life in the river Seine during these 50 years,” says Jean-Marie Mouchel, a professor at the Sorbonne University, who has been studying the river since the 80s. The sewage sapped the water of oxygen and created obstacles for river traffic. “There was so much sediment and deposits from the sewers that [they created] mountains of deposits on the bottom [of the river],” says Mouchel, “so boats couldn't even pass through.”

Read the full story here.
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Merrily we bring microplastics into the wilderness with our hiking shoes, study shows

Research comparing Adirondack mountain lakes in New York suggests foot traffic is significant source of pollutionHiking shoes and outdoor gear are likely a significant source of microplastic pollution in the wilderness, new research that checked for the pernicious material in several Adirondack mountain lakes in upstate New York suggests.Researchers measured microplastic levels in two lakes that are the among highest sources of water for the Hudson River – one that sees heavy foot traffic from hikers, and another lake that is far away from a path and rarely touched by human activity. Continue reading...

Hiking shoes and outdoor gear are likely a significant source of microplastic pollution in the wilderness, new research that checked for the pernicious material in several Adirondack mountain lakes in upstate New York suggests.Researchers measured microplastic levels in two lakes that are the among highest sources of water for the Hudson River – one that sees heavy foot traffic from hikers, and another lake that is far away from a path and rarely touched by human activity.The samples from the lake that sees heavier foot traffic showed levels that were about 23 times higher.Soft-soled trail shoes and synthetic clothing “appear to be significant contributors to microplastics finding their way into these remote, otherwise pristine waters”, said Tim Keyes, a Sacred Heart University data scientist, who independently worked on the project with his company, Evergreen Business Analytics, and the Adirondack Hamlet to Huts non-profit.Microplastics are tiny bits of plastic either intentionally added to consumer goods, or which are products of larger plastics breaking down. The particles may contain any number of 16,000 plastic chemicals, of which many, such as BPA, phthalates and Pfas, present serious health risks.The substance has been found throughout the human body, and can cross the placental and brain barriers. Among other issues, microplastics are linked to chronic pulmonary inflammation, which can lead to lung cancer.Previous research found that as much as 70% of microplastics in ocean samples were from apparel. Meanwhile, the substance has been found in clouds and in precipitation samples.Keyes in 2023 sampled for microplastics in Lake Tear of the Clouds, which sits at about 4,300ft (1,300 meters). It sees heavy hiker traffic because it is adjacent to a trail segment that is part of several larger trails.Keyes sent the sample to an independent lab that found 9.45 particles per milliliter (mL). Because the area only had hiker traffic, “it was surmised that microplastic pollution was being brought to the area largely by airborne deposition”, the authors wrote, meaning primarily via precipitation.Now they suspect they were wrong. The authors returned two years later in early 2025 to sample Lake Tear, as well as Moss Pond, which the paper describes as “a remote, trailless body of water” at a similar elevation.The independent lab detected about 0.73 particles per mL in Moss Pond, and about 16.54 particles per mL in Lake Tear – a roughly 23-fold difference that suggests the hiker traffic is playing a major role. Lightweight trail shoes can shed microplastics similar to tires, which are another source of pollution, Keyes said.“It’s a pretty clear indication given the stark difference in microplastic levels between the sister body of water that’s a bushwack away compared to Lake Tear, which is on this thoroughfare for hikers that sees tens of thousands of people annually,” Keyes said.Sami Romanick, a microplastics researcher with the Environmental Working Group non-profit who was not involved with the study, said the research’s methodology and design were sound. She agreed with the conclusion that the contamination was likely caused by hiking gear.“It’s a reasonable explanation that’s supported by the data,” Romanick said.The authors say the findings are meant to generate awareness and underscore why industry should produce clothing and shoes that will shed fewer microplastics. Hikers should consider wearing hard-rubber-sole shoes that release less plastic compared with soft soles, and wear synthetic fiber clothing underneath those made with natural fibers.

The Whispers of Rock is a personal journey through aeons of geology

In her new book, earth scientist Anjana Khatwa writes a love letter to Earth's rocks and mountains, offering a passionate blend of science and spirituality

The rocks of the Jurassic Coast in the UK span 185 million yearsJames Osmond/Alamy The Whispers of RockAnjana Khatwa, The Bridge Street Press (UK); Basic Books (US, out 4 November) IT IS easy to take rocks for granted. How often do we think about the materials that make up the pavements we walk on, or the origins of the pebbles we pick up while sitting at the beach? And how often do we realise the importance of geology when it comes to nature writing and the hard-hitting conversations now happening about our warming world? Any action concerning climate change and the future of our planet needs to incorporate how we interact with the components that make up our world. How fortunate, then, that we can gain such an understanding from earth scientist Anjana Khatwa and her new book, The Whispers of Rock: Stories from the Earth. Billed as an “exhilarating journey through deep time”, it is a love letter written with such passion that you can’t help but be moved. Khatwa has devoted much of her life to spreading the gospel of geology, and here she offers clinical, scientific substance to back up her extraordinary depth of feeling. Throughout the book, she is methodical in her explanations of subjects such as how mountains, craters and slate are formed, while also weaving in fascinating details. We learn that the Taj Mahal in India, an iconic symbol of love, was constructed with ivory-white Makrana marble, the origins of which date back to when several primitive land masses collided nearly 2 billion years ago. A recipe incorporating those tectonic movements, cyanobacteria, photosynthesis and calcium carbonate led to the rock used in this extraordinary monument, a much more complex process than might be realised at first glance. Once she has established their scientific foundation, Khatwa brings the stories of rocks and minerals to life – and does so far more sensually than any school geology lesson I can remember. In Petra, Jordan, she pushes the reader to take heed of the negative space where rock has been cut back to form buildings, and the beauty that can emerge in unexpected places. Among sandstone and quartz, the rocks whisper “these patterns you see are the traces of rivers of old”, she writes. These are Khatwa’s friends, and soon these “story keepers of time” become ours too. “ A recipe incorporating tectonic collisions, photosynthesis and more led to the marble used in the Taj Mahal “ Khatwa’s love of rocks emerged as a child, when she walked over solidified lava flows in south-east Kenya. In her book, she takes us with her around the world and across aeons, all the way to her home of 20 years in Dorset, UK, where the Jurassic Coast World Heritage Site and its 185 million years of geological history are her neighbours. On this journey, we come to learn how rocks have shaped her and our world alike. We visit Stonehenge’s massive sarsen stones on Salisbury plain in the UK, uncover the science and mythology of the pounamu greenstones in New Zealand and follow the racial and political history of the Black Belt, a region of dark, fertile soil in the US South that was dominated by cotton plantations, following the forced removal of Indigenous communities. But what makes this book really stand out is Khatwa’s personal touch. She offers us vulnerability, sharing her own experiences of motherhood and faith, while not shying away from the fact that the environmental sector in which she works is one of the least diverse fields in the UK. She describes how she found herself “moulded into a different person by the whiteness of the environments I worked in”, with her cultural and spiritual identity taking second place to her scientific self. This book is a must-read for anyone trying to balance that duality, as well as those who wish to understand it. We cheer Khatwa on as she holds on tight to her rocks and navigates spaces of belonging and unbelonging. The Whispers of Rock is so packed with information that every chapter requires you to step away and process it. Khatwa is also deliberately provocative, admitting from the beginning of the book that its alliance of science and spirituality may cause discomfort and consternation in some readers because it just isn’t what people are used to. But this potentially divisive approach is a catalyst for a truly thought-provoking odyssey. Dhruti Shah is a freelance journalist based in London

Swimming Drone Explores Underwater Mountain in Lake Superior

Filmmakers and researchers are using drones to explore an underwater mountain in Lake Superior

Known to some as the “Freshwater Everest,” if you want to explore this mountain, you don’t go up, you go down.In the middle of Lake Superior, near the boundary between Canadian and US waters, sits the Superior Shoal, a mountain that’s completely underwater. The shoal is about 4 square miles of volcanic rock that rises up from the bottom of the lake to a height nearly three times that of the Statue of Liberty. Its peak wrests about 30 feet below the surface. Now, filmmakers and researchers are exploring it with underwater drones. They want to see if it’s a hotbed for aquatic life that could offer a refuge for species facing obstacles elsewhere in the Great Lakes.“This is an area that has very, very rarely been explored on camera,” said Zach Melnick, a cofounder of Inspired Planet Productions, which he runs with his business partner and wife, Yvonne Drebert. It’s not the only underwater incline in the Great Lakes. Others include Stannard Rock, a reef in Lake Superior north of Marquette; a knoll outside Tobermory, Ontario in Lake Huron; and Midlake Reef in Lake Michigan, between Muskegon and Milwaukee. And it’s not the only “Superior Shoal.” There’s another located in the St. Lawrence River off the shore of New York. But Drebert and Melnick believe the Superior Shoal in Lake Michigan is the largest known underwater mountain in fresh water. Documenting aquatic life with a swimming robot The filmmakers had been curious about lake protrusions after exploring one that appeared to be an outlier of aquatic life while filming their series and related documentary, “ All Too Clear: Beneath the Surface of the Great Lakes.” Those works dive deep into how invasive mussels in the Great Lakes are gobbling up essential nutrients and devastating organisms, from plankton to whitefish.When a researcher they’d worked with in the past, Michael Rennie, got a grant to explore the Superior Shoal, they “sort of begged him,” Melnick said, to let them come along.Rennie is an associate professor at Lakehead University and a research fellow at the International Institute for Sustainable Development-Experimental Lakes Area. Now, with the help of the filmmakers’ cameras, he’s looking into whether the Superior Shoal might be a hotspot for life, which he said is often the case for similar seamounts found in the ocean. What they’re essentially studying, Rennie said, is “how the physics of having this giant mountain in a bunch of water that’s swirling around all the time interacts with things like nutrients, and with the growth of algae, to promote the abundance of fish that we seem to be seeing out there.”Melnick and Drebert are operating special cinema-grade cameras to monitor aquatic life like zooplankton, algae and fish. The drone they use is called a Boxfish Luna and it can go around 1,600 feet deep, about the length of five football fields.“Think of aerial drones, take all that cool technology, and put it in a robot that you’re shoving underwater,” Drebert said. “But our drone is a little bit special because it can swim in any direction, just like a fish.”Usually, it takes a little while for fish to get used to the swimming drone, Melnick said, but fish near the Superior Shoal seemed to be curious.“The trout out there were ultra amenable to being on camera,” he said. At one point, while the team was livestreaming video, they tried to measure fish with two laser points. The fish chased the glowing red dots the same way cats do. They also saw hydra, which are kind of like freshwater anemones, attached to rocks, giving the effect of a garden.“They are little tiny aquatic animals that wave in the wind,” said Drebert. “They use their little hairy tentacles to pull food, like little zooplankton and critters, out of the water.”Rennie said the data collected on the recent trip has not been fully analyzed yet. But, if research shows that the Superior Shoal is a magnet for aquatic life, then maybe it and places like it could serve as refuges for near-shore populations dealing with environmental or human-caused problems.“And, if that’s the case, then I think we’ve got really good arguments to be made for maybe we should think about affording these regions a higher conservation status,” Rennie said. Melnick and Drebert are planning to use footage taken from the Superior Shoal in a documentary they’re developing about lakemounts as well as a wildlife docuseries they’re working on. This story was originally published by Bridge Michigan and distributed through a partnership with The Associated Press.Copyright 2025 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.Photos You Should See – Sept. 2025

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