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Green Gold: Turning E-Waste Into a Treasure Trove of Rare Earth Metals

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Saturday, July 13, 2024

ETH doctoral student Marie Perrin presents the new recycling approach. In her left hand, she is holding the raw material in the form of a fluorescent lamp and, in her right, the yellow reagent that can separate rare earth metals. Credit: Fabio Masero / ETH ZurichScientists are developing a process inspired by nature that efficiently recovers europium from old fluorescent lamps. The approach could lead to the long-awaited recycling of rare earth metals.A small molecule that naturally serves as a binding site for metals in enzymes also proves useful for separating certain rare earth metals from each other.In a proof of concept, the process extracts europium directly from fluorescent powder in used energy-saving lamps in much higher quantities than existing methods.The researchers are now working on expanding their approach to other rare earth metals. They are in the process of founding a start-up to put the recycling of these raw materials into practice.Rare earth metals are not as rare as their name suggests. However, they are indispensable for the modern economy. After all, these 17 metals are essential raw materials for digitalization and the energy transition. They are found in smartphones, computers, screens, and batteries – without them, no electric motor would run and no wind turbine would turn. Because Europe is almost entirely dependent on imports from China, these raw materials are considered to be critical.However, rare earth metals are also critical because of their extraction. They always occur in compound form in natural ores – but as these elements are chemically very similar, they are difficult to separate. Traditional separation processes are therefore very chemical- and energy-intensive and require several extraction steps. This makes the extraction and purification of these metals expensive, resource- and time-consuming and extremely harmful to the environment. Innovative Recycling Techniques“Rare earth metals are hardly ever recycled in Europe,” says Victor Mougel, Professor at the Laboratory of Inorganic Chemistry at ETH Zurich. A team of researchers led by Mougel wants to change this. “There is an urgent need for sustainable and uncomplicated methods for separating and recovering these strategic raw materials from various sources,” says the chemist.In a study recently published in the journal Nature Communications, the team presents a surprisingly simple method for efficiently separating and recovering the rare earth metal europium from complex mixtures including other rare earth metals.Inspired by NatureMarie Perrin, a doctoral student in Mougel’s group and first author of the study, explains: “Existing separation methods are based on hundreds of liquid-liquid extraction steps and are inefficient – the recycling of europium has so far been impractical.” In their study, they show how a simple inorganic reagent can significantly improve separation. “This allows us to obtain europium in a few simple steps – and in quantities that are at least 50 times higher than with previous separation methods,” says Perrin.The key to this technique can be found in small inorganic molecules featuring four sulfur atoms around tungsten or molybdenum: tetrathiometallates. The researchers were inspired by the world of proteins. Tetrathiometallates are found as a binding site for metals in natural enzymes and are used as active substances against cancer and copper metabolism disorders.For the first time, tetrathiometallates are now also being used as ligands for the separation of rare earth metals. Their unique redox properties come into play here, reducing europium to its unusual divalent state and thus simplifying separation from the other trivalent rare earth metals.VIDEORapid recycling of europium from fluorescent lamps. Credit: Marie Perrin / ETH ZurichPractical Applications and Environmental Impact“The principle is so efficient and robust that we can apply it directly to used fluorescent lamps without the usual pre-treatment steps,” says Mougel.Electronic waste is an important but as yet underutilized source of rare earth metals. “If this source were tapped into, the lamp waste that Switzerland currently sends abroad to be disposed of in a landfill could be recycled here in Switzerland instead,” says Mougels. In this way, lamp waste could serve as an urban mine for europium and make Switzerland less dependent on imports.“Our recycling approach is significantly more environmentally friendly than all conventional methods of extracting rare earth metals from mineral ores.”— Victor MougelIn the past, europium was mainly used as phosphor in fluorescent lamps and flat screens, which led to high market prices. As fluorescent lamps are now gradually being phased out, demand has fallen, so that the previous recycling methods for europium are no longer economically viable. More efficient separation strategies are nevertheless desirable and could help to utilize the vast quantities of cheap fluorescent lamp waste whose rare earth metal content is around 17 times higher than in natural ores.Strategic Recycling EffortsThis makes it all the more urgent to recover rare metals at the end of a product’s life and keep them in circulation – but the recovery rate of rare earth elements in the EU is still below one percent.In principle, any separation process for rare earth metals can be used both for extraction from ore and for recovery from waste. With their method, however, the researchers are deliberately focussing on recycling the raw materials, as this makes much more ecological and economic sense. “Our recycling approach is significantly more environmentally friendly than all conventional methods for extracting rare earth metals from mineral ores,” says Mougel.New Ventures and CommercializationThe researchers have patented their technology and are in the process of founding a start-up called REEcover to commercialize it in the future. They are currently working on adapting the separation process for other rare earth metals such as neodymium and dysprosium, which are found in magnets. If this is successful, Marie Perrin wants to build up the start-up after her doctorate and establish the recycling of rare earth metals in practice.Reference: “Recovery of europium from E-waste using redox active tetrathiotungstate ligands” by Marie A. Perrin, Paul Dutheil, Michael Wörle and Victor Mougel, 3 June 2024, Nature Communications.DOI: 10.1038/s41467-024-48733-z

Scientists are developing a process inspired by nature that efficiently recovers europium from old fluorescent lamps. The approach could lead to the long-awaited recycling of...

Marie Perrin

ETH doctoral student Marie Perrin presents the new recycling approach. In her left hand, she is holding the raw material in the form of a fluorescent lamp and, in her right, the yellow reagent that can separate rare earth metals. Credit: Fabio Masero / ETH Zurich

Scientists are developing a process inspired by nature that efficiently recovers europium from old fluorescent lamps. The approach could lead to the long-awaited recycling of rare earth metals.

  • A small molecule that naturally serves as a binding site for metals in enzymes also proves useful for separating certain rare earth metals from each other.
  • In a proof of concept, the process extracts europium directly from fluorescent powder in used energy-saving lamps in much higher quantities than existing methods.
  • The researchers are now working on expanding their approach to other rare earth metals. They are in the process of founding a start-up to put the recycling of these raw materials into practice.

Rare earth metals are not as rare as their name suggests. However, they are indispensable for the modern economy. After all, these 17 metals are essential raw materials for digitalization and the energy transition. They are found in smartphones, computers, screens, and batteries – without them, no electric motor would run and no wind turbine would turn. Because Europe is almost entirely dependent on imports from China, these raw materials are considered to be critical.

However, rare earth metals are also critical because of their extraction. They always occur in compound form in natural ores – but as these elements are chemically very similar, they are difficult to separate. Traditional separation processes are therefore very chemical- and energy-intensive and require several extraction steps. This makes the extraction and purification of these metals expensive, resource- and time-consuming and extremely harmful to the environment.

Innovative Recycling Techniques

“Rare earth metals are hardly ever recycled in Europe,” says Victor Mougel, Professor at the Laboratory of Inorganic Chemistry at ETH Zurich. A team of researchers led by Mougel wants to change this. “There is an urgent need for sustainable and uncomplicated methods for separating and recovering these strategic raw materials from various sources,” says the chemist.

In a study recently published in the journal Nature Communications, the team presents a surprisingly simple method for efficiently separating and recovering the rare earth metal europium from complex mixtures including other rare earth metals.

Inspired by Nature

Marie Perrin, a doctoral student in Mougel’s group and first author of the study, explains: “Existing separation methods are based on hundreds of liquid-liquid extraction steps and are inefficient – the recycling of europium has so far been impractical.” In their study, they show how a simple inorganic reagent can significantly improve separation. “This allows us to obtain europium in a few simple steps – and in quantities that are at least 50 times higher than with previous separation methods,” says Perrin.

The key to this technique can be found in small inorganic molecules featuring four sulfur atoms around tungsten or molybdenum: tetrathiometallates. The researchers were inspired by the world of proteins. Tetrathiometallates are found as a binding site for metals in natural enzymes and are used as active substances against cancer and copper metabolism disorders.

For the first time, tetrathiometallates are now also being used as ligands for the separation of rare earth metals. Their unique redox properties come into play here, reducing europium to its unusual divalent state and thus simplifying separation from the other trivalent rare earth metals.


Rapid recycling of europium from fluorescent lamps. Credit: Marie Perrin / ETH Zurich

Practical Applications and Environmental Impact

“The principle is so efficient and robust that we can apply it directly to used fluorescent lamps without the usual pre-treatment steps,” says Mougel.

Electronic waste is an important but as yet underutilized source of rare earth metals. “If this source were tapped into, the lamp waste that Switzerland currently sends abroad to be disposed of in a landfill could be recycled here in Switzerland instead,” says Mougels. In this way, lamp waste could serve as an urban mine for europium and make Switzerland less dependent on imports.

“Our recycling approach is significantly more environmentally friendly than all conventional methods of extracting rare earth metals from mineral ores.”

— Victor Mougel

In the past, europium was mainly used as phosphor in fluorescent lamps and flat screens, which led to high market prices. As fluorescent lamps are now gradually being phased out, demand has fallen, so that the previous recycling methods for europium are no longer economically viable. More efficient separation strategies are nevertheless desirable and could help to utilize the vast quantities of cheap fluorescent lamp waste whose rare earth metal content is around 17 times higher than in natural ores.

Strategic Recycling Efforts

This makes it all the more urgent to recover rare metals at the end of a product’s life and keep them in circulation – but the recovery rate of rare earth elements in the EU is still below one percent.

In principle, any separation process for rare earth metals can be used both for extraction from ore and for recovery from waste. With their method, however, the researchers are deliberately focussing on recycling the raw materials, as this makes much more ecological and economic sense. “Our recycling approach is significantly more environmentally friendly than all conventional methods for extracting rare earth metals from mineral ores,” says Mougel.

New Ventures and Commercialization

The researchers have patented their technology and are in the process of founding a start-up called REEcover to commercialize it in the future. They are currently working on adapting the separation process for other rare earth metals such as neodymium and dysprosium, which are found in magnets. If this is successful, Marie Perrin wants to build up the start-up after her doctorate and establish the recycling of rare earth metals in practice.

Reference: “Recovery of europium from E-waste using redox active tetrathiotungstate ligands” by Marie A. Perrin, Paul Dutheil, Michael Wörle and Victor Mougel, 3 June 2024, Nature Communications.
DOI: 10.1038/s41467-024-48733-z

Read the full story here.
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To Improve Your Gut Microbiome, Spend More Time in Nature

Microbes found in green spaces can transfer into your body, increasing bacterial diversity and potentially boosting the strength of the immune system.

Microbes in our gut can have a profound impact on our health, but research is showing that those surrounding us in our environment—what’s known as the natural environmental microbiome—can have a big impact too. This suggests that we should all spend a lot more time interacting with nature, both outdoors and indoors.I was first introduced to this emerging area of science by Professor Gretchen Daily from Stanford University. She mentioned a Finnish research project that showed how letting kindergarten-aged children play in a yard that contained “dirt” from the forest floor resulted in a significant positive impact on their gut microbiome. Seventy-nine young children took part, all living in urban environments and spending the majority of their days at different daycare centers around Finland. The only difference between them was that these daycare centers had three different types of outdoor spaces.The first type was a fairly standard outdoor play area, comprised of concrete, gravel, and some plastic matting. The second was the type typically found in daycare environments that are already nature-orientated, with grass, soil, and planted areas for the children to play in. These two acted as a control against which to compare the third experimental space, where the concrete and gravel were covered with segments of forest floor and soil from the local coniferous forest.The children were encouraged to play in only one of the three types of yard each day over the 28 days of the experiment (note that some kindergartens have multiple play areas). Before and after periods of play, the children’s skin and gut microbiota were measured using genetic sequencing of bacteria taken from skin swabs and stool samples, along with changes to T cells and cytokines in their blood. These cells and proteins play a critical role in preventing autoimmunity and autoimmune diseases; their levels are often used as an indication of how well the immune system is functioning.Science NewsletterYour weekly roundup of the best stories on health care, the climate crisis, new scientific discoveries, and more. Delivered on Wednesdays.Remarkable results emerged. The children who played in the experimental yard showed a large increase in the diversity of microbiota on their skin and in their gut in comparison to the children playing in the urban and nature-orientated areas. Importantly, these were the “good” types of microbiota—those associated with health benefits. There was also a significant increase in the children’s immunity markers, indicative of them having gained enhanced immunoregulatory pathways—which is indicative of a reduced risk of immune-mediated diseases such as inflammatory bowel disease and rheumatoid arthritis.The importance of this study cannot be overstated. It implies that even short-term exposure to nature’s microbial diversity has the potential to radically alter the diversity of microbiota on our skin and in our gut. In addition, it suggests that the altered gut microbiota can modulate the function of our immune system.A Healthy Microbiome Is Made, Not BornEveryone has a distinctive community of microbes in their gut—a person’s ethnicity, the food they consume, antibiotic use, body size, and the amount they exercise all leave a clear signature on their gut microbial diversity. The role of these microbiota communities is significant. Our organs can only synthesize 11 of the 20 essential amino acids that we need, so the rest, along with 13 essential vitamins, are retrieved and synthesized by our gut microbes.And these microbial communities don’t just help our gut extract nutrients from food. Microbes also produce some of the most important compounds for our health, including immuno-suppressants, anti-cancer, and anti-inflammatory compounds. They appear to be associated with the functioning of our immune system, central nervous system, and associated health outcomes, so much so that clear correlations have been found between particular gut microbiota—so called “sick” microbiomes—and certain illnesses. Those with a distinctive gut microbial signature include irritable bowel syndrome, inflammatory bowel disease, celiac disease, and colorectal cancer as well as nonintestinal disorders such as obesity and type 2 diabetes.

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Canyon De Chelly in Arizona Will Become Latest National Park Unit to Ban Commercial Air Tours

Commercial air tours will soon be prohibited over Canyon de Chelly National Monument in northeastern Arizona under a plan approved this week by the Federal Aviation Administration and the National Park Service

CANYON DE CHELLY NATIONAL MONUMENT, Ariz. (AP) — Commercial air tours will soon be prohibited over Canyon de Chelly National Monument in northeastern Arizona under a plan approved this week by the Federal Aviation Administration and the National Park Service.The park service said in a statement that the plan was was signed Thursday and will take effect in 180 days, barring any legal challenges. It will ban the tours over the park and within a half mile (800 meters) outside its boundary.“Prohibiting commercial air tours protects these lands’ cultural and spiritual significance to the Navajo Nation,” said park Superintendent Lyn Carranza. “Canyon de Chelly National Monument’s Air Tour Management Plan honors the unique nation-to-nation relationship regarding decisions affecting the park and helps to preserve one of the most important archeological landscapes in the southwest.” What is Canyon de Chelly National Monument? The park lies within the Four Corners region inside the Navajo Nation and is among the most visited national monuments in the United States. It's known for its soaring sandstone cliffs and 800-foot (244-meter) high Spider Rock spire. Prehistoric rock art is found throughout the area, which has been home to Native Americans for millennia. What's the history of air tours at U.S. national parks and monuments? The sightseeing flights reportedly date back to the 1930s, when crews building the Hoover Dam on the Arizona-Nevada border asked helicopter pilots working on the project to give flyovers to their families.The tours offering a unique overhead view of spectacular landscapes have long been popular at Grand Canyon National Park in Arizona. Some of the nation’s busiest spots for tour operators have included Hawaii Volcanoes National Park, which is home to one of the world’s most active volcanoes, and Haleakala National Park. What are some objections to to the tours? Supporters of the tours say they offer an exciting experience to tourists and allow older people and those with disabilities to see and enjoy the parks. Critics say the flights are an unnecessarily dangerous way to view some of the most stunning public lands in the United States. Rules designating routes and minimum altitudes were set in 1986 after two tour aircraft collided over the Grand Canyon, killing 25 people. Still, there are currently numerous options for helicopter tours to the Grand Canyon, departing from places including Las Vegas and Sedona, Arizona. Critics also complain that the buzz of helicopters drowns out the sounds of nature, disrupting the experiences of visitors on the ground and tribal members who call the land around the parks home. What regulations exist to manage the tours? The park service works with the FAA to implement the National Park Air Tour Management Act of 2000, which requires tour operators who want to conduct such commercial air tours to get FAA approval. The law also requires the FAA, in conjunction with the park service, to establish management plans for air tours for those parks and nearby tribal lands where applications are made. What other parks have air tour regulations? Canyon de Chelly is the last of roughly two dozen national park units where the group Public Employees for Environmental Responsibility had fought for flyover restrictions. Other national parks where such commercial flyovers essentially are or will be banned in coming years include Badlands National Park and Mount Rushmore National Memorial in South Dakota, Glacier National Park in Montana, and Bandelier National Monument in New Mexico. Only two air tours per year are allowed at Death Valley National Park along the California-Nevada border.Copyright 2024 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.Photos You Should See - Sept. 2024

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Aren’t we all? This article is scheduled to go live soon. Please check back shortly! The post Work In Progress appeared first on Bay Nature.

Aren’t we all? This article is scheduled to go live soon. Please check back shortly! About the Author Tanvi Dutta Gupta is a 2024-2025 editorial fellow at Bay Nature focusing on Wild Billions, Bay Nature's project tracking federal money for nature. She graduated in June 2024 from Stanford with an assortment of degrees including earth systems, ecology, and science communication. Before reaching California, she grew up across Singapore, London, Hong Kong, and India. She enjoys unraveling the intersections of people, nature, and politics; cool animal facts; long runs; and new scone flavors. Every story from Bay Nature magazine is the product of a team dedicated to connecting our readers to the world around them and increasing environmental literacy. Please help us keep this unique regional magazine thriving, and support the ecosystem we’ve built around it, by subscribing today—you’ll get Bay Nature four times a year in your mailbox! Read This Next December 18, 2024 Baynature.org November 27, 2024 Baynature.org November 19, 2024 Baynature.org November 19, 2024 Magazine

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Ecologists find computer vision models’ blind spots in retrieving wildlife images

Biodiversity researchers tested vision systems on how well they could retrieve relevant nature images. More advanced models performed well on simple queries but struggled with more research-specific prompts.

Try taking a picture of each of North America's roughly 11,000 tree species, and you’ll have a mere fraction of the millions of photos within nature image datasets. These massive collections of snapshots — ranging from butterflies to humpback whales — are a great research tool for ecologists because they provide evidence of organisms’ unique behaviors, rare conditions, migration patterns, and responses to pollution and other forms of climate change.While comprehensive, nature image datasets aren’t yet as useful as they could be. It’s time-consuming to search these databases and retrieve the images most relevant to your hypothesis. You’d be better off with an automated research assistant — or perhaps artificial intelligence systems called multimodal vision language models (VLMs). They’re trained on both text and images, making it easier for them to pinpoint finer details, like the specific trees in the background of a photo.But just how well can VLMs assist nature researchers with image retrieval? A team from MIT’s Computer Science and Artificial Intelligence Laboratory (CSAIL), University College London, iNaturalist, and elsewhere designed a performance test to find out. Each VLM’s task: locate and reorganize the most relevant results within the team’s “INQUIRE” dataset, composed of 5 million wildlife pictures and 250 search prompts from ecologists and other biodiversity experts. Looking for that special frogIn these evaluations, the researchers found that larger, more advanced VLMs, which are trained on far more data, can sometimes get researchers the results they want to see. The models performed reasonably well on straightforward queries about visual content, like identifying debris on a reef, but struggled significantly with queries requiring expert knowledge, like identifying specific biological conditions or behaviors. For example, VLMs somewhat easily uncovered examples of jellyfish on the beach, but struggled with more technical prompts like “axanthism in a green frog,” a condition that limits their ability to make their skin yellow.Their findings indicate that the models need much more domain-specific training data to process difficult queries. MIT PhD student Edward Vendrow, a CSAIL affiliate who co-led work on the dataset in a new paper, believes that by familiarizing with more informative data, the VLMs could one day be great research assistants. “We want to build retrieval systems that find the exact results scientists seek when monitoring biodiversity and analyzing climate change,” says Vendrow. “Multimodal models don’t quite understand more complex scientific language yet, but we believe that INQUIRE will be an important benchmark for tracking how they improve in comprehending scientific terminology and ultimately helping researchers automatically find the exact images they need.”The team’s experiments illustrated that larger models tended to be more effective for both simpler and more intricate searches due to their expansive training data. They first used the INQUIRE dataset to test if VLMs could narrow a pool of 5 million images to the top 100 most-relevant results (also known as “ranking”). For straightforward search queries like “a reef with manmade structures and debris,” relatively large models like “SigLIP” found matching images, while smaller-sized CLIP models struggled. According to Vendrow, larger VLMs are “only starting to be useful” at ranking tougher queries.Vendrow and his colleagues also evaluated how well multimodal models could re-rank those 100 results, reorganizing which images were most pertinent to a search. In these tests, even huge LLMs trained on more curated data, like GPT-4o, struggled: Its precision score was only 59.6 percent, the highest score achieved by any model.The researchers presented these results at the Conference on Neural Information Processing Systems (NeurIPS) earlier this month.Inquiring for INQUIREThe INQUIRE dataset includes search queries based on discussions with ecologists, biologists, oceanographers, and other experts about the types of images they’d look for, including animals’ unique physical conditions and behaviors. A team of annotators then spent 180 hours searching the iNaturalist dataset with these prompts, carefully combing through roughly 200,000 results to label 33,000 matches that fit the prompts.For instance, the annotators used queries like “a hermit crab using plastic waste as its shell” and “a California condor tagged with a green ‘26’” to identify the subsets of the larger image dataset that depict these specific, rare events.Then, the researchers used the same search queries to see how well VLMs could retrieve iNaturalist images. The annotators’ labels revealed when the models struggled to understand scientists’ keywords, as their results included images previously tagged as irrelevant to the search. For example, VLMs’ results for “redwood trees with fire scars” sometimes included images of trees without any markings.“This is careful curation of data, with a focus on capturing real examples of scientific inquiries across research areas in ecology and environmental science,” says Sara Beery, the Homer A. Burnell Career Development Assistant Professor at MIT, CSAIL principal investigator, and co-senior author of the work. “It’s proved vital to expanding our understanding of the current capabilities of VLMs in these potentially impactful scientific settings. It has also outlined gaps in current research that we can now work to address, particularly for complex compositional queries, technical terminology, and the fine-grained, subtle differences that delineate categories of interest for our collaborators.”“Our findings imply that some vision models are already precise enough to aid wildlife scientists with retrieving some images, but many tasks are still too difficult for even the largest, best-performing models,” says Vendrow. “Although INQUIRE is focused on ecology and biodiversity monitoring, the wide variety of its queries means that VLMs that perform well on INQUIRE are likely to excel at analyzing large image collections in other observation-intensive fields.”Inquiring minds want to seeTaking their project further, the researchers are working with iNaturalist to develop a query system to better help scientists and other curious minds find the images they actually want to see. Their working demo allows users to filter searches by species, enabling quicker discovery of relevant results like, say, the diverse eye colors of cats. Vendrow and co-lead author Omiros Pantazis, who recently received his PhD from University College London, also aim to improve the re-ranking system by augmenting current models to provide better results.University of Pittsburgh Associate Professor Justin Kitzes highlights INQUIRE’s ability to uncover secondary data. “Biodiversity datasets are rapidly becoming too large for any individual scientist to review,” says Kitzes, who wasn’t involved in the research. “This paper draws attention to a difficult and unsolved problem, which is how to effectively search through such data with questions that go beyond simply ‘who is here’ to ask instead about individual characteristics, behavior, and species interactions. Being able to efficiently and accurately uncover these more complex phenomena in biodiversity image data will be critical to fundamental science and real-world impacts in ecology and conservation.”Vendrow, Pantazis, and Beery wrote the paper with iNaturalist software engineer Alexander Shepard, University College London professors Gabriel Brostow and Kate Jones, University of Edinburgh associate professor and co-senior author Oisin Mac Aodha, and University of Massachusetts at Amherst Assistant Professor Grant Van Horn, who served as co-senior author. Their work was supported, in part, by the Generative AI Laboratory at the University of Edinburgh, the U.S. National Science Foundation/Natural Sciences and Engineering Research Council of Canada Global Center on AI and Biodiversity Change, a Royal Society Research Grant, and the Biome Health Project funded by the World Wildlife Fund United Kingdom.

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Bay Nature Staff Picks of 2024

Butterflies fed with Q-tips, Hollywood moments on the trail, bird battles, beetles, and the Bay Naturiest story of 2024. (It was a competitive field.) The post Bay Nature Staff Picks of 2024 appeared first on Bay Nature.

Here, I present results from our highly unscientific poll of our ten staff members on the Bay Nature stories, talks, hikes, and fun facts from 2024 that most delighted us, changed our views of the world, or just stuck with us.Feel free to send yours: letters@baynature.org. —Kate Golden, digital editor Best Quest For this great insect schlep, scientists fed butterflies with Q-tips dipped in Fruit Punch-flavored Gatorade. Cutest Baby Animals To be specific, they are the cutest baby animals that are also a great starry-armed hope for our coasts. Least Anthropocentric Often we write about ecological restoration. Rarely from a turtle’s point of view. This one wended five miles over two months, on two-inch legs, up Redwood Creek.  Best Longread “One of Kimberly Stevenot’s responsibilities as a kid was to hang out by the side of the road and look for park rangers—or anyone else who looked like they might be trouble,” H.R. Smith begins, in a story about the making and the meaning of Dos Rios, the newest California state park. Best NBD Chat with a Superstar Author Amy Tan drove through a storm to join this conversation with our editor-in-chief! VIDEO Best Education Story Our kind of education story, that is. Most Likely to Inspire a Cold Plunge  Sachi Cunningham, a surfer and filmmaker, writes about what the ocean has meant in her own life. Wildest Dial-In Guest to a Bay Nature Talk Guest Amanda Spears joined our talk on the Farallones from the Farallones. (So did some birds, in cameo appearances.) VIDEO Most Game-Changing New Technology Best Private Sunset Hike In August, we experienced an epic sunset in the golden hills of McCormick Ranch, a special North Bay spot that isn’t generally open to the public. Most Dense With Fun Facts We love a long read here at BN, but we also live for fun facts, which are easier to dish out at parties. Best Talk about the Birds and the Bees (and Yet on Neither Bird Nor Bee) Janet Leonard’s talk on banana slug sex in September was very, very informative. VIDEO Most Fearsome Bird Battle  One could also call this a battle of birds vs. biologists. Best Headline Most Sobering Yet Mind-Blowing Introduction to a Species We’ll Never Meet “For each crayfish is a universe unto itself, a host of tiny passengers.” Most Sow’s Ear Into Silk Purse Sediment may not seem scintillating, on the surface, but Sonya Bennett-Brandt will make you care about mud. We must have it, to cement the future of the San Francisco Bay. The Climate Change Story That Got to Us Climate change touches most of our work, yet some stories hit more than others. Why this one? Maybe it was that bats are adorable and fragile-seeming, maybe that people went to such lengths to help them. Most Promising Wad of Cash for Environmental Projects As our next president has promised to axe environmental priorities, conservationists are counting their blessings that California’s voters decided to fund climate adaptation in a big way. Best Reader-Submitted Photography We are lucky to have a community of photographers, professional and amateur, who send us their unusual observations. In March, Dan Osipov beautifully captured an insect that is so rarely photographed, in fact, that federal officials contacted us about using the photos. Most Bay Nature-y News Our thanks to Eric Sanford, the UC Davis prof whose student made this momentous discovery, for the tip. Send your stories: editorial@baynature.org. Finally, a few more moments from the trail … Hardiest Hikers On an unexpectedly blustery day in June, Bay Nature members proved to be hardy sorts who braved the elements to see some coyote brush leaf beetles. Most Hollywood Moment on the Trail At Coyote Ridge in April, just when scientist Stu Weiss was explaining how grazing could control non-native grasses to help native species, a rancher-conservationist showed up … almost as if they had planned it. Best Bioblitz In November we unleashed our inner children at Ocean Beach, digging in the sand to find its treasures. Note to selves: In 2025, more of this. Mole crab (Emerita analoga), with humans.

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Music

Wings of Hope

“Wings of Hope,” is a film chronicling the re-discovery of a population of wild Harpy Eagles in the Maya Mountains of southern Belize. It details the history of the Belize Foundation and Research and Environmental Education (BFREE) and UNC Wilmington initiative born from this discovery – the Integrated Community-based Harpy Eagle and Avian Conservation Program. Created by Emmy-award winning filmmakers, Richard and Carol Foster of Wildlife Film Productions, this 20-minute documentary is rich with breath-taking footage of adult and juvenile Harpy eagles and other wildlife and vistas found in the pristine tropical forests of the Bladen Nature Reserve. Over the seven year duration of the project, the Fosters followed local people involved as they transition from trainees to conservationists and as their lives are changed through their efforts to save this rare bird and its diminishing habitat.

Animals
Nature
Conservation

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