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Egg labels, egg-splained: from cage-free to free-range, how to eat ethically and economically

News Feed
Friday, April 26, 2024

Shopping for eggs at the grocery store can be a confusing experience. Cartons are labeled with all kinds of descriptors – natural, organic, cage-free, free-range – and some cost more at checkout. But what do they actually mean, and for ethically minded consumers, are they actually worth the money?Protein-packed eggs are linked to relatively low carbon emissions compared with other land-based animal protein sources, but not all eggs are created equal when it comes to the environment, health or animal welfare, experts say.“When it comes to ensuring better lives for laying hens, consumers have a lot of power, as long as they’re not led astray by meaningless labels,” said Daisy Freund, vice-president of farm animal welfare at the American Society for the Prevention of Cruelty to Animals, or ASPCA.The Guardian spoke with several experts, who explained what these egg labels mean, and how to shop in a way that balances a concern for hens with what’s good for the planet and your own wallet.What exactly do different egg labels mean?Grade AA, A or BGrade AA eggs are considered the best, and have ‘thick and firm’ whites. Illustration: Olivia de Salve Villedieu/The GuardianConsumer grades rate the interior quality of the egg yolk and white, as well as the appearance and condition of the shell. Grade AA eggs are considered the best, and have “thick and firm” whites, according to the US Department of Agriculture, or USDA, with yolks that are high, round and practically free from defects, with clean, unbroken shells. Grade A eggs are similar to Grade AA eggs but with less firm whites.Grade B eggs tend to have thinner whites and wider yolks. Their shells are also unbroken, but may show light stains. These eggs are rarely found in retail stores because they are often used to make liquid, frozen and dried egg products.Cage-freeEggs labeled “USDA-grade cage-free” are from hens that are able to roam vertically and horizontally in indoor houses. They must have access to fresh food and water, litter and protection from predators. These systems vary from farm to farm, but they must allow hens to exhibit natural behaviors and include scratch areas, perches and nests.In the last 10 years, hundreds of companies have committed to going entirely cage-free, and the country’s cage-free egg-laying flock increased by more than 10.5m hens in the first six months of 2023.But it’s important to remember that cage-free does not equal cruelty-free. “Cage-free means the bird lives indoors, but not in a cage,” said Carolyn Dimitri, director of NYU’s graduate food studies program. “This bird probably lives in crowded conditions.”Hormone-freeNo hormones are used in the raising of chickens. In fact, federal regulations banned their use in the 1950s, so if you see labels that say “no hormones”, it’s simply a marketing tactic and is not related to more humane treatment of hens or the health of an egg.Certified organicCertified organic eggs come from uncaged organic hens, which are fed organic feed free of animal byproducts, GMO crops or synthetic fertilizers, pesticides or herbicides. Regulated, certified and inspected by the USDA, organic flocks must have access to outdoor spaces and be raised without growth hormones (as all chickens, even non-organic ones, are) or antibiotics.But the organic label hasn’t always met consumer expectations for animal welfare, since organic layer hens still often live in crowded conditions. Some producers confine their hens to barns with concrete porches instead of true outdoor space. A new rule, however, mandates indoor and outdoor space requirements, thanks to the efforts of advocacy groups. But it doesn’t go into effect until 2029, said Freund, “so in the meantime, consumers should still seek out welfare-certified options”. The Cornucopia Institute, a non-profit food and farm watchdog group, maintains a score card to help consumers decide which organic eggs are best.Free-rangeRegulated by the USDA, free-range eggs are produced by hens that are able to roam vertically and horizontally in indoor houses, have access to fresh food and water and continuous access to the outdoors during their laying cycle. The outdoor area may be fenced and/or covered with netting-like material.Like cage-free hens, free-range hens must be allowed to exhibit natural behaviors and include scratch areas, perches and nests and have access to litter, have protection from predators and be able to move in the barn. Animal welfare advocates say free-range is a loosely defined term and since the type of outdoor space can vary, the label may fall short of shoppers’ expectations.Certified humaneNot affiliated with the USDA, Certified Humane is a project of Humane Farm Animal Care, a third-party non-profit certification program. The Certified Humane label means the hens’ environment takes into account their welfare needs and protects them from physical and thermal discomfort, fear and distress and allows them to perform their natural behavior. No cages or aviary systems that confine birds are allowed and laying hens must be provided with nest boxes.Pasture-raisedHens raised entirely on pasture can eat bugs, worms and grass and have ample room to roam, scratch, dust-bathe and engage in all of their natural behaviors. Since the term “pasture-raised” has no legal definition and is not regulated by the USDA, consumers should look for eggs that have additional labels and certifications to ensure the term is not misused by producers. Once considered a luxury item, rising demand helped shrink the price gap and increase supply. Pasture-raised eggs can be richer in flavor and more nutritious than caged eggs since the hens spend time outdoors and eat a more diverse diet. When hens have access to natural forage, the need for large-scale feed production and transportation is reduced, which results in fewer emissions compared to conventional egg production.What if a carton of eggs has none of these labels?The majority of the 300m chickens involved in egg production in the US are still raised in long, windowless sheds in rows of stacked battery cages. These caged hens are afforded only 67 sq ins of space on average – smaller than a sheet of letter-sized paper – and denied natural behaviors such as nesting, perching and dust-bathing. Factory-farmed eggs are often advertised as being “natural” or using “no antibiotics ever” and their cartons can paint misleading scenes of humane treatment on idyllic farms. If these cartons are not labeled as being “cage-free”, “free-range”, “organic” or “pasture-raised”, you can assume they came from factory farm hens who are confined to such a degree that they can’t even flap their wings.How do I eat ethically without breaking the bank?While eggs are still one of the cheapest forms of animal protein, prices have soared in recent years, now sometimes exceeding $1 per egg. “Higher-welfare animal products sometimes do cost more because farmers are investing in better conditions and treatment, as opposed to factory farming, which relies on cruel practices and externalized costs to make a cheap product,” said Freund. Since brands commonly charge more for claims such as “humane”, “natural” and even “free-range”, which are not backed by strong definitions or on-farm audits, shoppers can be easily misled.Experts suggest buying higher-welfare eggs like pasture-raised for special meals or reducing the number of eggs you eat each week. Another option is to supplement your diet with plant-based options. The ASPCA’s Shop with Your Heart Grocery List allows shoppers to find the lowest-cost, highest-welfare products.How do I know what kinds of eggs restaurants are using?The short answer is, you often don’t. While some restaurants may disclose what kinds of eggs they use for egg-centric dishes on a menu, it’s harder to know what types of eggs are featured in items such as baked goods, pastas, dressings and desserts. In 2018, Panera petitioned the FDA to know what an “egg” was exactly, stating that many of its competitors sell egg patties that contain more than five ingredients.McDonald’s recently announced they’re using 100% cage-free eggs, and Panera has committed to sourcing 100% cage-free eggs across all products by the end of 2025. Many restaurants use frozen, refrigerated liquid and dried forms of eggs whether they’re cage-free or not. The best way to find out is to ask the restaurants you patronize, but that doesn’t always mean you’ll get a clear answer.Are eggs from the farmers’ market automatically good?Farmers market eggs are richer in color and taste. Illustration: Olivia de Salve Villedieu/The GuardianFarmers’ markets can be great places to find alternatives to factory-farmed food. The yolks of farm-fresh eggs are often richer in color and taste since their food sources are of a higher quality than factory-farm chickens. Of course, not all farmers’ markets are created equal and just because a product is local doesn’t necessarily mean it’s better. Ask the farmer for details on how their hens are raised since not all farms raise animals the same way.What about vegan alternatives?For people looking for plant-based alternatives, there are a host of options. Simply Eggless’s vegan eggs are made from lupin beans and are available as a liquid, patty, bite and omelet, while Crafty Counter’s hard-boiled WunderEggs are created from cashews, almonds and other plant-based ingredients. For vegan baking, Bob’s Red Mill’s gluten-free Egg Replacer and Ener-G’s Egg Replacer are both made primarily from potato starch and tapioca flour, and Neat’s Egg Mixx is crafted from chia seeds and garbanzo beans.While vegan eggs that mimic the look, texture and taste of real eggs tend to be more expensive than eggs from hens, many of the flour-like products that replace eggs in baking are affordable (a 16oz bag can equal around 100 eggs). Experts say it’s critical for plant-based companies to scale up production and optimize ingredients so products can be competitively priced for consumers.The verdict: so what should I buy?When considering animal welfare, environmental impact and health, certified-organic, pasture-raised eggs are the winner.“The birds are able to live a free life that suits their biological needs, and they are not exposed to synthetic chemicals on the pasture or through their feed,” said NYU’s Dimitri. “This egg has the best animal-welfare and environmental lifestyle.” One study found that pasture-raised eggs had significantly more omega-3 fats and vitamin E compared to those from caged hens.When looking solely at animal welfare, experts point to eggs from hens raised on pasture as the best option. “Shoppers should look for eggs from farms that are certified by the Animal Welfare Approved program, which requires that animals are on pasture throughout their lives, or can look for the Certified Humane seal with the words ‘pasture-raised’ on the package,” said the ASPCA’s Freund.Even if shoppers can’t find one of these options, experts say most retail stores carry some Certified Humane products, even if they’re not pasture-raised. Those products at least ensure that animals are never in cages and are raised in enriched indoor spaces or have access to large outdoor spaces.

Egg cartons are labeled with all sorts of descriptors, making grocery shopping a confusing experience. Experts tell us what these labels mean and how to shopShopping for eggs at the grocery store can be a confusing experience. Cartons are labeled with all kinds of descriptors – natural, organic, cage-free, free-range – and some cost more at checkout. But what do they actually mean, and for ethically minded consumers, are they actually worth the money?Protein-packed eggs are linked to relatively low carbon emissions compared with other land-based animal protein sources, but not all eggs are created equal when it comes to the environment, health or animal welfare, experts say. Continue reading...

Shopping for eggs at the grocery store can be a confusing experience. Cartons are labeled with all kinds of descriptors – natural, organic, cage-free, free-range – and some cost more at checkout. But what do they actually mean, and for ethically minded consumers, are they actually worth the money?

Protein-packed eggs are linked to relatively low carbon emissions compared with other land-based animal protein sources, but not all eggs are created equal when it comes to the environment, health or animal welfare, experts say.

“When it comes to ensuring better lives for laying hens, consumers have a lot of power, as long as they’re not led astray by meaningless labels,” said Daisy Freund, vice-president of farm animal welfare at the American Society for the Prevention of Cruelty to Animals, or ASPCA.

The Guardian spoke with several experts, who explained what these egg labels mean, and how to shop in a way that balances a concern for hens with what’s good for the planet and your own wallet.

What exactly do different egg labels mean?

Grade AA, A or B

Grade AA eggs are considered the best, and have ‘thick and firm’ whites. Illustration: Olivia de Salve Villedieu/The Guardian

Consumer grades rate the interior quality of the egg yolk and white, as well as the appearance and condition of the shell. Grade AA eggs are considered the best, and have “thick and firm” whites, according to the US Department of Agriculture, or USDA, with yolks that are high, round and practically free from defects, with clean, unbroken shells. Grade A eggs are similar to Grade AA eggs but with less firm whites.

Grade B eggs tend to have thinner whites and wider yolks. Their shells are also unbroken, but may show light stains. These eggs are rarely found in retail stores because they are often used to make liquid, frozen and dried egg products.

Cage-free

Eggs labeled “USDA-grade cage-free” are from hens that are able to roam vertically and horizontally in indoor houses. They must have access to fresh food and water, litter and protection from predators. These systems vary from farm to farm, but they must allow hens to exhibit natural behaviors and include scratch areas, perches and nests.

In the last 10 years, hundreds of companies have committed to going entirely cage-free, and the country’s cage-free egg-laying flock increased by more than 10.5m hens in the first six months of 2023.

But it’s important to remember that cage-free does not equal cruelty-free. “Cage-free means the bird lives indoors, but not in a cage,” said Carolyn Dimitri, director of NYU’s graduate food studies program. “This bird probably lives in crowded conditions.”

Hormone-free

No hormones are used in the raising of chickens. In fact, federal regulations banned their use in the 1950s, so if you see labels that say “no hormones”, it’s simply a marketing tactic and is not related to more humane treatment of hens or the health of an egg.

Certified organic

Certified organic eggs come from uncaged organic hens, which are fed organic feed free of animal byproducts, GMO crops or synthetic fertilizers, pesticides or herbicides. Regulated, certified and inspected by the USDA, organic flocks must have access to outdoor spaces and be raised without growth hormones (as all chickens, even non-organic ones, are) or antibiotics.

But the organic label hasn’t always met consumer expectations for animal welfare, since organic layer hens still often live in crowded conditions. Some producers confine their hens to barns with concrete porches instead of true outdoor space. A new rule, however, mandates indoor and outdoor space requirements, thanks to the efforts of advocacy groups. But it doesn’t go into effect until 2029, said Freund, “so in the meantime, consumers should still seek out welfare-certified options”. The Cornucopia Institute, a non-profit food and farm watchdog group, maintains a score card to help consumers decide which organic eggs are best.

Free-range

Regulated by the USDA, free-range eggs are produced by hens that are able to roam vertically and horizontally in indoor houses, have access to fresh food and water and continuous access to the outdoors during their laying cycle. The outdoor area may be fenced and/or covered with netting-like material.

Like cage-free hens, free-range hens must be allowed to exhibit natural behaviors and include scratch areas, perches and nests and have access to litter, have protection from predators and be able to move in the barn. Animal welfare advocates say free-range is a loosely defined term and since the type of outdoor space can vary, the label may fall short of shoppers’ expectations.

Certified humane

Not affiliated with the USDA, Certified Humane is a project of Humane Farm Animal Care, a third-party non-profit certification program. The Certified Humane label means the hens’ environment takes into account their welfare needs and protects them from physical and thermal discomfort, fear and distress and allows them to perform their natural behavior. No cages or aviary systems that confine birds are allowed and laying hens must be provided with nest boxes.

Pasture-raised

Hens raised entirely on pasture can eat bugs, worms and grass and have ample room to roam, scratch, dust-bathe and engage in all of their natural behaviors. Since the term “pasture-raised” has no legal definition and is not regulated by the USDA, consumers should look for eggs that have additional labels and certifications to ensure the term is not misused by producers. Once considered a luxury item, rising demand helped shrink the price gap and increase supply. Pasture-raised eggs can be richer in flavor and more nutritious than caged eggs since the hens spend time outdoors and eat a more diverse diet. When hens have access to natural forage, the need for large-scale feed production and transportation is reduced, which results in fewer emissions compared to conventional egg production.

What if a carton of eggs has none of these labels?

The majority of the 300m chickens involved in egg production in the US are still raised in long, windowless sheds in rows of stacked battery cages. These caged hens are afforded only 67 sq ins of space on average – smaller than a sheet of letter-sized paper – and denied natural behaviors such as nesting, perching and dust-bathing. Factory-farmed eggs are often advertised as being “natural” or using “no antibiotics ever” and their cartons can paint misleading scenes of humane treatment on idyllic farms. If these cartons are not labeled as being “cage-free”, “free-range”, “organic” or “pasture-raised”, you can assume they came from factory farm hens who are confined to such a degree that they can’t even flap their wings.

How do I eat ethically without breaking the bank?

While eggs are still one of the cheapest forms of animal protein, prices have soared in recent years, now sometimes exceeding $1 per egg. “Higher-welfare animal products sometimes do cost more because farmers are investing in better conditions and treatment, as opposed to factory farming, which relies on cruel practices and externalized costs to make a cheap product,” said Freund. Since brands commonly charge more for claims such as “humane”, “natural” and even “free-range”, which are not backed by strong definitions or on-farm audits, shoppers can be easily misled.

Experts suggest buying higher-welfare eggs like pasture-raised for special meals or reducing the number of eggs you eat each week. Another option is to supplement your diet with plant-based options. The ASPCA’s Shop with Your Heart Grocery List allows shoppers to find the lowest-cost, highest-welfare products.

How do I know what kinds of eggs restaurants are using?

The short answer is, you often don’t. While some restaurants may disclose what kinds of eggs they use for egg-centric dishes on a menu, it’s harder to know what types of eggs are featured in items such as baked goods, pastas, dressings and desserts. In 2018, Panera petitioned the FDA to know what an “egg” was exactly, stating that many of its competitors sell egg patties that contain more than five ingredients.

McDonald’s recently announced they’re using 100% cage-free eggs, and Panera has committed to sourcing 100% cage-free eggs across all products by the end of 2025. Many restaurants use frozen, refrigerated liquid and dried forms of eggs whether they’re cage-free or not. The best way to find out is to ask the restaurants you patronize, but that doesn’t always mean you’ll get a clear answer.

Are eggs from the farmers’ market automatically good?

Farmers market eggs are richer in color and taste. Illustration: Olivia de Salve Villedieu/The Guardian

Farmers’ markets can be great places to find alternatives to factory-farmed food. The yolks of farm-fresh eggs are often richer in color and taste since their food sources are of a higher quality than factory-farm chickens. Of course, not all farmers’ markets are created equal and just because a product is local doesn’t necessarily mean it’s better. Ask the farmer for details on how their hens are raised since not all farms raise animals the same way.

What about vegan alternatives?

For people looking for plant-based alternatives, there are a host of options. Simply Eggless’s vegan eggs are made from lupin beans and are available as a liquid, patty, bite and omelet, while Crafty Counter’s hard-boiled WunderEggs are created from cashews, almonds and other plant-based ingredients. For vegan baking, Bob’s Red Mill’s gluten-free Egg Replacer and Ener-G’s Egg Replacer are both made primarily from potato starch and tapioca flour, and Neat’s Egg Mixx is crafted from chia seeds and garbanzo beans.

While vegan eggs that mimic the look, texture and taste of real eggs tend to be more expensive than eggs from hens, many of the flour-like products that replace eggs in baking are affordable (a 16oz bag can equal around 100 eggs). Experts say it’s critical for plant-based companies to scale up production and optimize ingredients so products can be competitively priced for consumers.

The verdict: so what should I buy?

When considering animal welfare, environmental impact and health, certified-organic, pasture-raised eggs are the winner.

“The birds are able to live a free life that suits their biological needs, and they are not exposed to synthetic chemicals on the pasture or through their feed,” said NYU’s Dimitri. “This egg has the best animal-welfare and environmental lifestyle.” One study found that pasture-raised eggs had significantly more omega-3 fats and vitamin E compared to those from caged hens.

When looking solely at animal welfare, experts point to eggs from hens raised on pasture as the best option. “Shoppers should look for eggs from farms that are certified by the Animal Welfare Approved program, which requires that animals are on pasture throughout their lives, or can look for the Certified Humane seal with the words ‘pasture-raised’ on the package,” said the ASPCA’s Freund.

Even if shoppers can’t find one of these options, experts say most retail stores carry some Certified Humane products, even if they’re not pasture-raised. Those products at least ensure that animals are never in cages and are raised in enriched indoor spaces or have access to large outdoor spaces.

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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