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These Unique Black-Footed Ferrets Are on the Edge of Extinction. Trump’s Cuts May Well Do Them in.

News Feed
Friday, February 28, 2025

This story was originally published by Vox.com and is reproduced here as part of the Climate Desk collaboration. In the open grasslands of South Dakota, not far from the dramatic rock formations of Badlands National Park, lives one of the continent’s cutest, fiercest, and rarest animals: the black-footed ferret. Black-footed ferrets, weasel-like animals with distinctive dark bands around their eyes and black feet, are ruthless little hunters. At night, they dive into burrows in pursuit of juicy prairie dogs, their primary food source. Without prairie dogs, these ferrets would not survive. From as many as a million ferrets in the 19th century, today there are only a few hundred of these furry predators roaming the Great Plains, the only place on Earth they live. That there are any black-footed ferrets at all is something of a miracle. In the 1970s, scientists thought black-footed ferrets were extinct, but a twist of fate, and an unprecedented breeding effort led by the US Fish and Wildlife Service, brought this critical piece of the prairie ecosystem back from the brink. This success—one of the greatest of any wildlife revival program—is now at risk. Earlier this month, as part of the Trump administration’s purge of federal employees, Tina Jackson, the head of the FWS’s entire black-footed ferret recovery program, was fired. FWS also fired two other permanent staffers who were involved in keeping captive ferrets alive at the National Black-Footed Ferret Conservation Center, the nation’s main breeding facility. Those cuts amount to more than a quarter of the center’s permanent, non-administrative staff, Jackson said. The center also has a vacant biologist position that Jackson said may not be filled. Additionally, FWS fired a staff biologist who led black-footed ferret conservation in Wyoming. The staff changes imperil the tenuous success of ferret recovery and the very existence of these animals, several experts including current and former Fish and Wildlife Service employees told Vox. Critical funding has been restricted, too: Two organizations that rely on federal money for ferret conservation on public and tribal lands told Vox that funds for this work were frozen. Experts who have spent decades trying to save black-footed ferrets say these impacts threaten the broader prairie ecosystem. Efforts to conserve ferrets and their prey sustain this important American landscape, a home for insects that pollinate our crops, plants that store carbon in their long roots, and streams that provide us with fresh water. “Right now, the recovery of the species is dependent on captive populations,” said Jackson, who started her role with the Fish and Wildlife Service last spring, after more than two decades with Colorado’s state wildlife agency. “Without people to take care of those captive populations, we will potentially lose the species. The hardest thing is to think about them blinking out on our watch.” Few species demonstrate the power of conservation quite like the black-footed ferret. In the late 1800s, there were as many as 1 million living among prairie dog colonies in the plains, as far north as Saskatchewan and as far south as northern Mexico. But in the 1900s, extermination programs bankrolled by the US and state governments started killing off prairie dogs, which were viewed as pests that competed with cattle for forage. These government-sanctioned exterminations collapsed prairie dog populations, in turn devastating black-footed ferrets. Without prairie dogs, ferrets had nothing to eat. Around the same time, fleas began spreading plague—yes, plague—in the Great Plains. That killed even more prairie dogs and ferrets, both of which are highly susceptible to the disease. By the late ’70s, ferrets had vanished, and scientists considered them extinct. But in the fall of 1981, a dog named Shep changed everything. Shep, a ranch dog in Wyoming, brought a carcass of a small mammal to his home near the northern town of Meeteetse. His owners didn’t recognize the animal and took it to a taxidermist, who identified it as a black-footed ferret. The carcass ultimately led wildlife officials to a nearby ferret colony—the last known one on Earth, home to about 130 animals. “The importance of the captive breeding center to the survival of the species is pretty huge.” With that, the extinct black-footed ferret was officially brought back from the dead. But just a few years after Shep’s discovery, all but 18 ferrets had died from plague and other threats. So with the specter of extinction looming once again, wildlife officials took them out of the wild and into captivity. With those 18 ferrets, the Fish and Wildlife Service, along with Wyoming state wildlife officials, launched a captive breeding and recovery program in the late ’80s, determined to keep the species alive. The goal of the program, among the first of its kind in the country, was to breed ferrets under human care before eventually releasing them back into the prairie landscape. In a way, it was the reverse of the government interventions that had initially helped push the ferrets toward extinction. The bedrock of this program is the Black-Footed Ferret Conservation Center near Fort Collins, Colorado. The center breeds most of the black-footed ferrets in the US today. It’s a painstaking process that involves carefully pairing individuals to make sure their babies will boost the population’s limited genetic diversity. (Officials use a genetic registry called a “studbook” to figure out the best pairs.) Remarkably, the center has also led groundbreaking efforts to clone black-footed ferrets that died decades ago. The cloning program, which is the first of its kind, is another way to inject new genetic diversity into the population to ensure its survival. The ferret center is also critical for the survival of ferrets once they’ve been released. Researchers condition the animals for life in the wild—running them through what is essentially a predator bootcamp. Workers put the ferrets in outdoor pens with burrows and introduce live prairie dogs, typically once a week, for them to kill. After about 30 days, ferrets that have passed bootcamp muster get the okay to be released into the wild. “The importance of the captive breeding center to the survival of the species is pretty huge,” said Steve Forrest, a biologist who’s long been involved in black-footed ferret conservation. The recent job cuts will hamper the center’s breeding and training efforts, experts told Vox. The two technicians who were terminated cared for captive ferrets, which involved raising kits, preparing food, and observing them during preconditioning. Jackson, meanwhile, was the connective tissue across a wide range of partners, including the Association of Zoos and Aquariums and the nonprofit environmental group Defenders of Wildlife, which are all working to conserve black-footed ferrets. She led budget and staff meetings and made sure the breeding center had what it needed to keep running, Jackson said. The Fish and Wildlife Service did not respond to a request for comment. Breeding black-footed ferrets is only half the challenge. The next step is making sure they survive once they’ve been released into the wild. The main threat they face there is still plague, which is relatively common among prairie dog colonies in the Great Plains. It’s also a minor threat to humans. So across many of the more than 30 sites where ferrets have been reintroduced, workers from a range of organizations kill fleas in prairie dog burrows and vaccinate wild-born ferrets against plague. Captive-born animals are vaccinated before they’re released. This approach works, but it’s labor-intensive and costly: technicians have to treat burrows and trap wild-born ferrets across thousands of acres, year after year. The bulk of funding for this work comes from the federal government, and much of that money is currently on ice. In the Conata Basin of South Dakota—home to the world’s largest wild population of ferrets—efforts to rid the landscape of plague are funded in part by the US Forest Service and the National Park Service, according to Travis Livieri, executive director of Prairie Wildlife Research, a nonprofit. That funding is currently frozen, Livieri said, adding that treating burrows typically starts as early as April. “There’s nothing left to cut,” Jackson said. “There’s no fat on the bones.” “If we’re not able to do plague mitigation, it’s very possible that over the course of three or four or five years we could lose the wild ferret population,” a current Fish and Wildlife Service employee told Vox. (The employee requested anonymity because they are not authorized to speak to the press.) “Having a disruption in established plague mitigation programs is really problematic and an existential threat to wild black-footed ferret populations.” Some federal funding for tribal nations to conserve black-footed ferrets has also been put on pause, according to Shaun Grassel, CEO of Buffalo Nations Grasslands Alliance (BNGA), a Indigenous-led conservation group, and a citizen of the Lower Brule Sioux Tribe. Last year, BNGA won a $1.1 million grant from the National Fish and Wildlife Foundation, a nonprofit that routes both private and federal funding to environmental groups. The money was to help several tribes, such as the Cheyenne River Sioux, kill fleas, monitor ferrets, and oversee their reintroduction into the wild. At least half of that grant is funded by federal dollars, Grassel said, and now the whole thing is frozen. “A freeze in certain federal funds will keep tribes from implementing their plague mitigation work,” Grassel said. If the freeze lasts much longer, “several tribal biologists are likely to lose their jobs,” he continued, “because all tribal work is funded by some grant program or another.” The National Fish and Wildlife Foundation did not respond to a request for comment. What’s especially frustrating to people involved in ferret conservation is that funding and staff resources were already limited heading into 2025. “So much conservation work is happening bare-bones right now, so when cuts come in there’s nothing left to cut,” Jackson said. “There’s no fat on the bones.” And the sorts of dollar amounts for this work—for wildlife conservation, overall—are almost imperceptible compared to other federal line items. Last year, the budget for the entire Fish and Wildlife Service, which works to conserve all endangered plants and animals, was roughly $4 billion. That’s less than 3 percent of what the Department of Transportation spends, for example. Livieri says conservation practitioners are also working to make it cheaper, such as by using more innovative insecticides. Concerned employees at the Fish and Wildlife Service are now scrambling to keep black-footed ferret work moving forward, the current employee told Vox. One idea is to bring in staff from other departments to care for ferrets at the breeding center, they said. Yet the national coordination that the Fish and Wildlife Service provided will be hard to maintain without Jackson and uncertainty around funding. A number of meetings on the calendar will likely be canceled, Jackson told me. Plus, the service is supposed to carry out a federally mandated five-year review of the black-footed ferret’s conservation status soon, which Jackson was meant to lead. It’s unclear who will now do that. “It’s literally a matter of life and death [for these animals],” the current employee said. “We’re just trying to figure out how to keep the lights on.” People within the conservation community are deeply concerned about the fate of endangered species under the Trump administration. But if there’s one thing that gives them hope for animals like the black-footed ferret, it’s the dedication they see in their colleagues. “If at one point in this remarkable journey [of the black-footed ferret], somebody just decided that this isn’t worth it, they could have gone extinct,” the current employee said. “But there have always been enough people who care, and we’ve soldiered on. It could have failed so many times, but enough people cared that it didn’t.”

This story was originally published by Vox.com and is reproduced here as part of the Climate Desk collaboration. In the open grasslands of South Dakota, not far from the dramatic rock formations of Badlands National Park, lives one of the continent’s cutest, fiercest, and rarest animals: the black-footed ferret. Black-footed ferrets, weasel-like animals with distinctive dark bands around their […]

This story was originally published by Vox.com and is reproduced here as part of the Climate Desk collaboration.

In the open grasslands of South Dakota, not far from the dramatic rock formations of Badlands National Park, lives one of the continent’s cutest, fiercest, and rarest animals: the black-footed ferret.

Black-footed ferrets, weasel-like animals with distinctive dark bands around their eyes and black feet, are ruthless little hunters. At night, they dive into burrows in pursuit of juicy prairie dogs, their primary food source. Without prairie dogs, these ferrets would not survive.

From as many as a million ferrets in the 19th century, today there are only a few hundred of these furry predators roaming the Great Plains, the only place on Earth they live. That there are any black-footed ferrets at all is something of a miracle. In the 1970s, scientists thought black-footed ferrets were extinct, but a twist of fate, and an unprecedented breeding effort led by the US Fish and Wildlife Service, brought this critical piece of the prairie ecosystem back from the brink.

This success—one of the greatest of any wildlife revival program—is now at risk.

Earlier this month, as part of the Trump administration’s purge of federal employees, Tina Jackson, the head of the FWS’s entire black-footed ferret recovery program, was fired. FWS also fired two other permanent staffers who were involved in keeping captive ferrets alive at the National Black-Footed Ferret Conservation Center, the nation’s main breeding facility. Those cuts amount to more than a quarter of the center’s permanent, non-administrative staff, Jackson said. The center also has a vacant biologist position that Jackson said may not be filled. Additionally, FWS fired a staff biologist who led black-footed ferret conservation in Wyoming.

The staff changes imperil the tenuous success of ferret recovery and the very existence of these animals, several experts including current and former Fish and Wildlife Service employees told Vox. Critical funding has been restricted, too: Two organizations that rely on federal money for ferret conservation on public and tribal lands told Vox that funds for this work were frozen.

Experts who have spent decades trying to save black-footed ferrets say these impacts threaten the broader prairie ecosystem. Efforts to conserve ferrets and their prey sustain this important American landscape, a home for insects that pollinate our crops, plants that store carbon in their long roots, and streams that provide us with fresh water.

“Right now, the recovery of the species is dependent on captive populations,” said Jackson, who started her role with the Fish and Wildlife Service last spring, after more than two decades with Colorado’s state wildlife agency. “Without people to take care of those captive populations, we will potentially lose the species. The hardest thing is to think about them blinking out on our watch.”

Few species demonstrate the power of conservation quite like the black-footed ferret. In the late 1800s, there were as many as 1 million living among prairie dog colonies in the plains, as far north as Saskatchewan and as far south as northern Mexico. But in the 1900s, extermination programs bankrolled by the US and state governments started killing off prairie dogs, which were viewed as pests that competed with cattle for forage.

These government-sanctioned exterminations collapsed prairie dog populations, in turn devastating black-footed ferrets. Without prairie dogs, ferrets had nothing to eat. Around the same time, fleas began spreading plague—yes, plague—in the Great Plains. That killed even more prairie dogs and ferrets, both of which are highly susceptible to the disease.

By the late ’70s, ferrets had vanished, and scientists considered them extinct.

But in the fall of 1981, a dog named Shep changed everything. Shep, a ranch dog in Wyoming, brought a carcass of a small mammal to his home near the northern town of Meeteetse. His owners didn’t recognize the animal and took it to a taxidermist, who identified it as a black-footed ferret. The carcass ultimately led wildlife officials to a nearby ferret colony—the last known one on Earth, home to about 130 animals.

“The importance of the captive breeding center to the survival of the species is pretty huge.”

With that, the extinct black-footed ferret was officially brought back from the dead. But just a few years after Shep’s discovery, all but 18 ferrets had died from plague and other threats. So with the specter of extinction looming once again, wildlife officials took them out of the wild and into captivity.

With those 18 ferrets, the Fish and Wildlife Service, along with Wyoming state wildlife officials, launched a captive breeding and recovery program in the late ’80s, determined to keep the species alive. The goal of the program, among the first of its kind in the country, was to breed ferrets under human care before eventually releasing them back into the prairie landscape. In a way, it was the reverse of the government interventions that had initially helped push the ferrets toward extinction.

The bedrock of this program is the Black-Footed Ferret Conservation Center near Fort Collins, Colorado. The center breeds most of the black-footed ferrets in the US today. It’s a painstaking process that involves carefully pairing individuals to make sure their babies will boost the population’s limited genetic diversity. (Officials use a genetic registry called a “studbook” to figure out the best pairs.)

Remarkably, the center has also led groundbreaking efforts to clone black-footed ferrets that died decades ago. The cloning program, which is the first of its kind, is another way to inject new genetic diversity into the population to ensure its survival.

The ferret center is also critical for the survival of ferrets once they’ve been released. Researchers condition the animals for life in the wild—running them through what is essentially a predator bootcamp. Workers put the ferrets in outdoor pens with burrows and introduce live prairie dogs, typically once a week, for them to kill. After about 30 days, ferrets that have passed bootcamp muster get the okay to be released into the wild.

“The importance of the captive breeding center to the survival of the species is pretty huge,” said Steve Forrest, a biologist who’s long been involved in black-footed ferret conservation.

The recent job cuts will hamper the center’s breeding and training efforts, experts told Vox. The two technicians who were terminated cared for captive ferrets, which involved raising kits, preparing food, and observing them during preconditioning. Jackson, meanwhile, was the connective tissue across a wide range of partners, including the Association of Zoos and Aquariums and the nonprofit environmental group Defenders of Wildlife, which are all working to conserve black-footed ferrets. She led budget and staff meetings and made sure the breeding center had what it needed to keep running, Jackson said.

The Fish and Wildlife Service did not respond to a request for comment.

Breeding black-footed ferrets is only half the challenge. The next step is making sure they survive once they’ve been released into the wild.

The main threat they face there is still plague, which is relatively common among prairie dog colonies in the Great Plains. It’s also a minor threat to humans. So across many of the more than 30 sites where ferrets have been reintroduced, workers from a range of organizations kill fleas in prairie dog burrows and vaccinate wild-born ferrets against plague. Captive-born animals are vaccinated before they’re released. This approach works, but it’s labor-intensive and costly: technicians have to treat burrows and trap wild-born ferrets across thousands of acres, year after year.

The bulk of funding for this work comes from the federal government, and much of that money is currently on ice. In the Conata Basin of South Dakota—home to the world’s largest wild population of ferrets—efforts to rid the landscape of plague are funded in part by the US Forest Service and the National Park Service, according to Travis Livieri, executive director of Prairie Wildlife Research, a nonprofit. That funding is currently frozen, Livieri said, adding that treating burrows typically starts as early as April.

“There’s nothing left to cut,” Jackson said. “There’s no fat on the bones.”

“If we’re not able to do plague mitigation, it’s very possible that over the course of three or four or five years we could lose the wild ferret population,” a current Fish and Wildlife Service employee told Vox. (The employee requested anonymity because they are not authorized to speak to the press.) “Having a disruption in established plague mitigation programs is really problematic and an existential threat to wild black-footed ferret populations.”

Some federal funding for tribal nations to conserve black-footed ferrets has also been put on pause, according to Shaun Grassel, CEO of Buffalo Nations Grasslands Alliance (BNGA), a Indigenous-led conservation group, and a citizen of the Lower Brule Sioux Tribe. Last year, BNGA won a $1.1 million grant from the National Fish and Wildlife Foundation, a nonprofit that routes both private and federal funding to environmental groups. The money was to help several tribes, such as the Cheyenne River Sioux, kill fleas, monitor ferrets, and oversee their reintroduction into the wild. At least half of that grant is funded by federal dollars, Grassel said, and now the whole thing is frozen.

“A freeze in certain federal funds will keep tribes from implementing their plague mitigation work,” Grassel said. If the freeze lasts much longer, “several tribal biologists are likely to lose their jobs,” he continued, “because all tribal work is funded by some grant program or another.”

The National Fish and Wildlife Foundation did not respond to a request for comment.

What’s especially frustrating to people involved in ferret conservation is that funding and staff resources were already limited heading into 2025. “So much conservation work is happening bare-bones right now, so when cuts come in there’s nothing left to cut,” Jackson said. “There’s no fat on the bones.”

And the sorts of dollar amounts for this work—for wildlife conservation, overall—are almost imperceptible compared to other federal line items. Last year, the budget for the entire Fish and Wildlife Service, which works to conserve all endangered plants and animals, was roughly $4 billion. That’s less than 3 percent of what the Department of Transportation spends, for example. Livieri says conservation practitioners are also working to make it cheaper, such as by using more innovative insecticides.

Concerned employees at the Fish and Wildlife Service are now scrambling to keep black-footed ferret work moving forward, the current employee told Vox. One idea is to bring in staff from other departments to care for ferrets at the breeding center, they said.

Yet the national coordination that the Fish and Wildlife Service provided will be hard to maintain without Jackson and uncertainty around funding. A number of meetings on the calendar will likely be canceled, Jackson told me. Plus, the service is supposed to carry out a federally mandated five-year review of the black-footed ferret’s conservation status soon, which Jackson was meant to lead. It’s unclear who will now do that.

“It’s literally a matter of life and death [for these animals],” the current employee said. “We’re just trying to figure out how to keep the lights on.”

People within the conservation community are deeply concerned about the fate of endangered species under the Trump administration. But if there’s one thing that gives them hope for animals like the black-footed ferret, it’s the dedication they see in their colleagues.

“If at one point in this remarkable journey [of the black-footed ferret], somebody just decided that this isn’t worth it, they could have gone extinct,” the current employee said. “But there have always been enough people who care, and we’ve soldiered on. It could have failed so many times, but enough people cared that it didn’t.”


Read the full story here.
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Contributor: 'Save the whales' worked for decades, but now gray whales are starving

The once-booming population that passed California twice a year has cratered because of retreating sea ice. A new kind of intervention is needed.

Recently, while sailing with friends on San Francisco Bay, I enjoyed the sight of harbor porpoises, cormorants, pelicans, seals and sea lions — and then the spouting plume and glistening back of a gray whale that gave me pause. Too many have been seen inside the bay recently.California’s gray whales have been considered an environmental success story since the passage of the 1972 Marine Mammal Protection Act and 1986’s global ban on commercial whaling. They’re also a major tourist attraction during their annual 12,000-mile round-trip migration between the Arctic and their breeding lagoons in Baja California. In late winter and early spring — when they head back north and are closest to the shoreline, with the moms protecting the calves — they can be viewed not only from whale-watching boats but also from promontories along the California coast including Point Loma in San Diego, Point Lobos in Monterey and Bodega Head and Shelter Cove in Northern California.In 1972, there were some 10,000 gray whales in the population on the eastern side of the Pacific. Generations of whaling all but eliminated the western population — leaving only about 150 alive today off of East Asia and Russia. Over the four decades following passage of the Marine Mammal Protection Act, the eastern whale numbers grew steadily to 27,000 by 2016, a hopeful story of protection leading to restoration. Then, unexpectedly over the last nine years, the eastern gray whale population has crashed, plummeting by more than half to 12,950, according to a recent report by the National Oceanic and Atmospheric Administration, the lowest numbers since the 1970s.Today’s changing ocean and Arctic ice conditions linked to fossil-fuel-fired climate change are putting this species again at risk of extinction.While there has been some historical variation in their population, gray whales — magnificent animals that can grow up to 50 feet long and weigh as much as 80,000 pounds — are now regularly starving to death as their main food sources disappear. This includes tiny shrimp-like amphipods in the whales’ summer feeding grounds in the Arctic. It’s there that the baleen filter feeders spend the summer gorging on tiny crustaceans from the muddy bottom of the Bering, Chuckchi and Beaufort seas, creating shallow pits or potholes in the process. But, with retreating sea ice, there is less under-ice algae to feed the amphipods that in turn feed the whales. Malnourished and starving whales are also producing fewer offspring.As a result of more whales washing up dead, NOAA declared an “unusual mortality event” in California in 2019. Between 2019 and 2025, at least 1,235 gray whales were stranded dead along the West Coast. That’s eight times greater than any previous 10-year average.While there seemed to be some recovery in 2024, 2025 brought back the high casualty rates. The hungry whales now come into crowded estuaries like San Francisco Bay to feed, making them vulnerable to ship traffic. Nine in the bay were killed by ship strikes last year while another 12 appear to have died of starvation.Michael Stocker, executive director of the acoustics group Ocean Conservation Research, has been leading whale-viewing trips to the gray whales’ breeding ground at San Ignacio Lagoon in Baja California since 2006. “When we started going, there would be 400 adult whales in the lagoon, including 100 moms and their babies,” he told me. “This year we saw about 100 adult whales, only five of which were in momma-baby pairs.” Where once the predators would not have dared to hunt, he said that more recently, “orcas came into the lagoon and ate a couple of the babies because there were not enough adult whales to fend them off.”Southern California’s Gray Whale Census & Behavior Project reported record-low calf counts last year.The loss of Arctic sea ice and refusal of the world’s nations recently gathered at the COP30 Climate Summit in Brazil to meet previous commitments to reduce greenhouse gas emissions suggest that the prospects for gray whales and other wildlife in our warming seas, including key food species for humans such as salmon, cod and herring, look grim.California shut down the nation’s last whaling station in 1971. And yet now whales that were once hunted for their oil are falling victim to the effects of the petroleum or “rock oil” that replaced their melted blubber as a source of light and lubrication. That’s because the burning of oil, coal and gas are now overheating our blue planet. While humans have gone from hunting to admiring whales as sentient beings in recent decades, our own intelligence comes into question when we fail to meet commitments to a clean carbon-free energy future. That could be the gray whales’ last best hope, if there is any.David Helvarg is the executive director of Blue Frontier, an ocean policy group, and co-host of “Rising Tide: The Ocean Podcast.” He is the author of the forthcoming “Forest of the Sea: The Remarkable Life and Imperiled Future of Kelp.”

Pills that communicate from the stomach could improve medication adherence

MIT engineers designed capsules with biodegradable radio frequency antennas that can reveal when the pill has been swallowed.

In an advance that could help ensure people are taking their medication on schedule, MIT engineers have designed a pill that can report when it has been swallowed.The new reporting system, which can be incorporated into existing pill capsules, contains a biodegradable radio frequency antenna. After it sends out the signal that the pill has been consumed, most components break down in the stomach while a tiny RF chip passes out of the body through the digestive tract.This type of system could be useful for monitoring transplant patients who need to take immunosuppressive drugs, or people with infections such as HIV or TB, who need treatment for an extended period of time, the researchers say.“The goal is to make sure that this helps people receive the therapy they need to help maximize their health,” says Giovanni Traverso, an associate professor of mechanical engineering at MIT, a gastroenterologist at Brigham and Women’s Hospital, and an associate member of the Broad Institute of MIT and Harvard.Traverso is the senior author of the new study, which appears today in Nature Communications. Mehmet Girayhan Say, an MIT research scientist, and Sean You, a former MIT postdoc, are the lead authors of the paper.A pill that communicatesPatients’ failure to take their medicine as prescribed is a major challenge that contributes to hundreds of thousands of preventable deaths and billions of dollars in health care costs annually.To make it easier for people to take their medication, Traverso’s lab has worked on delivery capsules that can remain in the digestive tract for days or weeks, releasing doses at predetermined times. However, this approach may not be compatible with all drugs.“We’ve developed systems that can stay in the body for a long time, and we know that those systems can improve adherence, but we also recognize that for certain medications, we can’t change the pill,” Traverso says. “The question becomes: What else can we do to help the person and help their health care providers ensure that they’re receiving the medication?”In their new study, the researchers focused on a strategy that would allow doctors to more closely monitor whether patients are taking their medication. Using radio frequency — a type of signal that can be easily detected from outside the body and is safe for humans — they designed a capsule that can communicate after the patient has swallowed it.There have been previous efforts to develop RF-based signaling devices for medication capsules, but those were all made from components that don’t break down easily in the body and would need to travel through the digestive system.To minimize the potential risk of any blockage of the GI tract, the MIT team decided to create an RF-based system that would be bioresorbable, meaning that it can be broken down and absorbed by the body. The antenna that sends out the RF signal is made from zinc, and it is embedded into a cellulose particle.“We chose these materials recognizing their very favorable safety profiles and also environmental compatibility,” Traverso says.The zinc-cellulose antenna is rolled up and placed inside a capsule along with the drug to be delivered. The outer layer of the capsule is made from gelatin coated with a layer of cellulose and either molybdenum or tungsten, which blocks any RF signal from being emitted.Once the capsule is swallowed, the coating breaks down, releasing the drug along with the RF antenna. The antenna can then pick up an RF signal sent from an external receiver and, working with a small RF chip, sends back a signal to confirm that the capsule was swallowed. This communication happens within 10 minutes of the pill being swallowed.The RF chip, which is about 400 by 400 micrometers, is an off-the-shelf chip that is not biodegradable and would need to be excreted through the digestive tract. All of the other components would break down in the stomach within a week.“The components are designed to break down over days using materials with well-established safety profiles, such as zinc and cellulose, which are already widely used in medicine,” Say says. “Our goal is to avoid long-term accumulation while enabling reliable confirmation that a pill was taken, and longer-term safety will continue to be evaluated as the technology moves toward clinical use.”Promoting adherenceTests in an animal model showed that the RF signal was successfully transmitted from inside the stomach and could be read by an external receiver at a distance up to 2 feet away. If developed for use in humans, the researchers envision designing a wearable device that could receive the signal and then transmit it to the patient’s health care team.The researchers now plan to do further preclinical studies and hope to soon test the system in humans. One patient population that could benefit greatly from this type of monitoring is people who have recently had organ transplants and need to take immunosuppressant drugs to make sure their body doesn’t reject the new organ.“We want to prioritize medications that, when non-adherence is present, could have a really detrimental effect for the individual,” Traverso says.Other populations that could benefit include people who have recently had a stent inserted and need to take medication to help prevent blockage of the stent, people with chronic infectious diseases such as tuberculosis, and people with neuropsychiatric disorders whose conditions may impair their ability to take their medication.The research was funded by Novo Nordisk, MIT’s Department of Mechanical Engineering, the Division of Gastroenterology at Brigham and Women’s Hospital, and the U.S. Advanced Research Projects Agency for Health (ARPA-H), which notes that the views and conclusions contained in this article are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the United States Government.

Costa Rica Rescues Orphaned Manatee Calf in Tortuguero

A young female manatee washed up alone on a beach in Tortuguero National Park early on January 5, sparking a coordinated effort by local authorities to save the animal. The calf, identified as a Caribbean manatee, appeared separated from its mother, with no immediate signs of her in the area. Park rangers received the first […] The post Costa Rica Rescues Orphaned Manatee Calf in Tortuguero appeared first on The Tico Times | Costa Rica News | Travel | Real Estate.

A young female manatee washed up alone on a beach in Tortuguero National Park early on January 5, sparking a coordinated effort by local authorities to save the animal. The calf, identified as a Caribbean manatee, appeared separated from its mother, with no immediate signs of her in the area. Park rangers received the first alert around 8 a.m. from visitors who spotted the stranded calf. Staff from the National System of Conservation Areas (SINAC) quickly arrived on site. They secured the animal to prevent further harm and began searching nearby waters and canals for the mother. Despite hours of monitoring, officials found no evidence of her presence. “The calf showed no visible injuries but needed prompt attention due to its age and vulnerability,” said a SINAC official involved in the operation. Without a parent nearby, the young manatee faced risks from dehydration and predators in the open beach environment. As the day progressed, the Ministry of Environment and Energy (MINAE) joined the response. They decided to relocate the calf for specialized care. In a first for such rescues in the region, teams arranged an aerial transport to move the animal safely to a rehabilitation facility. This step aimed to give the manatee the best chance at survival while experts assess its health. Once at the center, the calf received immediate feeding and medical checks. During one session, it dozed off mid-meal, a sign that it felt secure in the hands of caretakers. Biologists now monitor the animal closely, hoping to release it back into the wild if conditions allow. Manatees, known locally as manatíes, inhabit the coastal waters and rivers of Costa Rica’s Caribbean side. They often face threats from boat strikes, habitat loss, and pollution. Tortuguero, with its network of canals and protected areas, serves as a key habitat for the species. Recent laws have strengthened protections, naming the manatee a national marine symbol to raise awareness. This incident highlights the ongoing challenges for wildlife in the area. Local communities and tourists play a key role in reporting sightings, which can lead to timely interventions. Authorities encourage anyone spotting distressed animals to contact SINAC without delay. The rescue team expressed gratitude to those who reported the stranding. Their quick action likely saved the calf’s life. As investigations continue, officials will determine if environmental factors contributed to the separation. For now, the young manatee rests under professional care, a small win for conservation efforts in Limón. The post Costa Rica Rescues Orphaned Manatee Calf in Tortuguero appeared first on The Tico Times | Costa Rica News | Travel | Real Estate.

New Records Reveal the Mess RFK Jr. Left When He Dumped a Dead Bear in Central Park

Robert F. Kennedy Jr. says he left a bear cub's corpse in Central Park in 2014 to "be fun." Records newly obtained by WIRED show what he left New York civil servants to clean up.

This story contains graphic imagery.On August 4, 2024, when now-US health secretary Robert F. Kennedy Jr. was still a presidential candidate, he posted a video on X in which he admitted to dumping a dead bear cub near an old bicycle in Central Park 10 years prior, in a mystifying attempt to make the young bear’s premature death look like a cyclist’s hit and run.WIRED's Guide to How the Universe WorksYour weekly roundup of the best stories on health care, the climate crisis, new scientific discoveries, and more. At the time, Kennedy said he was trying to get ahead of a story The New Yorker was about to publish that mentioned the incident. But in coming clean, Kennedy solved a decade-old New York City mystery: How and why had a young black bear—a wild animal native to the state, but not to modern-era Manhattan—been found dead under a bush near West 69th Street in Central Park?WIRED has obtained documents that shed new light on the incident from the New York City Department of Parks and Recreation via a public records request. The documents—which include previously unseen photos of the bear cub—resurface questions about the bizarre choices Kennedy says he made, which left city employees dealing with the aftermath and lamenting the cub’s short life and grim fate.A representative for Kennedy did not respond for comment. The New York Police Department (NYPD) and the Parks Department referred WIRED to the New York Department of Environmental Conservation (NYDEC). NYDEC spokesperson Jeff Wernick tells WIRED that its investigation into the death of the bear cub was closed in late 2014 “due to a lack of sufficient evidence” to determine if state law was violated. They added that New York’s environmental conservation law forbids “illegal possession of a bear without a tag or permit and illegal disposal of a bear,” and that “the statute of limitations for these offenses is one year.”The first of a number of emails between local officials coordinating the handling of the baby bear’s remains was sent at 10:16 a.m. on October 6, 2014. Bonnie McGuire, then-deputy director at Urban Park Rangers (UPR), told two colleagues that UPR sergeant Eric Handy had recently called her about a “dead black bear” found in Central Park.“NYPD told him they will treat it like a crime scene so he can’t get too close,” McGuire wrote. “I’ve asked him to take pictures and send them over and to keep us posted.”“Poor little guy!” McGuire wrote in a separate email later that morning.According to emails obtained by WIRED, Handy updated several colleagues throughout the day, noting that the NYDEC had arrived on scene, and that the agency was planning to coordinate with the NYPD to transfer the body to the Bronx Zoo, where it would be inspected by the NYPD’s animal cruelty unit and the ASPCA. (This didn’t end up happening, as the NYDEC took the bear to a state lab near Albany.)Imagery of the bear has been public before—local news footage from October 2014 appears to show it from a distance. However, the documents WIRED obtained show previously unpublished images that investigators took of the bear on the scene, which Handy sent as attachments in emails to McGuire. The bear is seen laying on its side in an unnatural position. Its head protrudes from under a bush and rests next to a small patch of grass. Bits of flesh are visible through the bear’s black fur, which was covered in a few brown leaves.Courtesy of NYC Parks

U.S. Military Ends Practice of Shooting Live Animals to Train Medics to Treat Battlefield Wounds

The 2026 National Defense Authorization Act bans the use of live animals in live fire training exercises and prohibits "painful" research on domestic cats and dogs

U.S. Military Ends Practice of Shooting Live Animals to Train Medics to Treat Battlefield Wounds The 2026 National Defense Authorization Act bans the use of live animals in live fire training exercises and prohibits “painful” research on domestic cats and dogs Sarah Kuta - Daily Correspondent January 5, 2026 12:00 p.m. The U.S. military will no longer shoot live goats and pigs to help combat medics learn to treat battlefield injuries. Pexels The United States military is no longer shooting live animals as part of its trauma training exercises for combat medics. The 2026 National Defense Authorization Act, which was enacted on December 18, bans the use of live animals—including dogs, cats, nonhuman primates and marine mammals—in any live fire trauma training conducted by the Department of Defense. It directs military leaders to instead use advanced simulators, mannequins, cadavers or actors. According to the Associated Press’ Ben Finley, the bill ends the military’s practice of shooting live goats and pigs to help combat medics learn to treat battlefield injuries. However, the military is allowed to continue other practices involving animals, including stabbing, burning and testing weapons on them. In those scenarios, the animals are supposed to be anesthetized, per the AP. “With today’s advanced simulation technology, we can prepare our medics for the battlefield while reducing harm to animals,” says Florida Representative Vern Buchanan, who advocated for the change, in a statement shared with the AP. He described the military’s practices as “outdated and inhumane” and called the move a “major step forward in reducing unnecessary suffering.” Quick fact: What is the National Defense Authorization Act? The National Defense Authorization Act, or NDAA, is a law passed each year that authorizes the Department of Defense’s appropriated funds, greenlights the Department of Energy’s nuclear weapons programs and sets defense policies and restrictions, among other activities, for the upcoming fiscal year. Organizations have opposed the military’s use of live animals in trauma training, too, including the Physicians Committee for Responsible Medicine and the People for the Ethical Treatment of Animals. PETA, a nonprofit animal advocacy group, described the legislation as a “major victory for animals” that will “save countless animals from heinous cruelty” in a statement. The legislation also prohibits “painful research” on domestic cats and dogs, though exceptions can be made under certain circumstances, such as interests of national security. “Painful” research includes any training, experiments or tests that fall into specific pain categories outlined by the U.S. Department of Agriculture. For example, military cats and dogs can no longer be exposed to extreme environmental conditions or noxious stimuli they cannot escape, nor can they be forced to exercise to the point of distress or exhaustion. The bill comes amid a broader push to end the use of live animals in federal tests, studies and training, reports Linda F. Hersey for Stars and Stripes. After temporarily suspending live tissue training with animals in 2017, the U.S. Coast Guard made the ban permanent in 2018. In 2024, U.S. lawmakers directed the Department of Veterans Affairs to end its experiments on cats, dogs and primates. And in May 2025, the U.S. Navy announced it would no longer conduct research testing on cats and dogs. As the Washington Post’s Ernesto Londoño reported in 2013, the U.S. military has used animals for medical training since at least the Vietnam War. However, the practice largely went unnoticed until 1983, when the U.S. Army planned to anesthetize dogs, hang them from nylon mesh slings and shoot them at an indoor firing range in Maryland. When activists and lawmakers learned of the proposal, they decried the practice and convinced then-Defense Secretary Caspar Weinberger to ban the shooting of dogs. However, in 1984, the AP reported the U.S. military would continue shooting live goats and pigs for wound treatment training, with a military medical study group arguing “there is no substitute for the live animals as a study object for hands-on training.” In the modern era, it’s not clear how often and to what extent the military uses animals, per the AP. And despite the Department of Defense’s past efforts to minimize the use of animals for trauma training, a 2022 report from the Government Accountability Office, the watchdog agency charged with providing fact-based, nonpartisan information to Congress, determined that the agency was “unable to fully demonstrate the extent to which it has made progress.” The Defense Health Agency, the U.S. government entity responsible for the military’s medical training, says in a statement shared with the AP that it “remains committed to replacement of animal models without compromising the quality of medical training,” including the use of “realistic training scenarios to ensure medical providers are well-prepared to care for the combat-wounded.” Animal activists say technology has come a long way in recent decades so, beyond the animal welfare concerns, the military simply no longer needs to use live animals for training. Instead, military medics can simulate treating battlefield injuries using “cut suits,” or realistic suits with skin, blood and organs that are worn by a live person to mimic traumatic injuries. However, not everyone agrees. Michael Bailey, an Army combat medic who served two tours in Iraq, told the Washington Post in 2013 that his training with a sedated goat was invaluable. “You don’t get that [sense of urgency] from a mannequin,” he told the publication. “You don’t get that feeling of this mannequin is going to die. When you’re talking about keeping someone alive when physics and the enemy have done their best to do the opposite, it’s the kind of training that you want to have in your back pocket.” Get the latest stories in your inbox every weekday.

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