The Chinese market for donkey hides has created a new source of diseases

Chimpanzees are dying from human colds

For some great apes, the threat of human-borne diseases outweighs poaching or habitat loss. This article details the danger of reverse zoonoses, which refers to diseases that spread from humans to animals.

Serbian donkey cheese is the most expensive in the world

Only one farm in the world produces pule, a cheese made from rare Balkan donkey milk that can cost up to $600 per pound. Pule is special for a number of reasons, including the unusual ingredients and the amount of labor required to produce it. Everything, including milking the donkeys, must be done by hand.

The coronavirus likely came from China’s wet markets

A wet market is a type of marketplace primarily selling fresh, perishable goods such as meat, fish, and produce, often in a non-supermarket environment. The term originated in Singapore during the 1970s, and the "wet" aspect refers to the wet floors resulting from the washing of stalls and the use of ice to keep food fresh. Such markets have been identified as a major source of zoonotic outbreaks, including the COVID-19 pandemic.

Watch how viruses like Ebola can spill over from animals to humans—and vice-versa.

World's first cloned yak

China has successfully cloned a yak for the first time, using somatic cell cloning and genome selection to enhance traits like strength, health, and disease resistance.

Zoo animals have developed allergies, too

Although scientists do not know if allergies manifest among wild animals—and if animals can survive with them—in a zoo setting, veterinarians have observed zoo animals with common allergy symptoms, including itchiness, crusty skin, and runny eyes. Veterinarians have identified Asian elephants with pollen allergies and at least one jaguar with an allergy to fleas.

Foot-and-mouth disease, which affects animals, has been eradicated in many locations

The disease, which causes fevers and painful blistering in the mouth, muzzle, snout, teats, and feet—somewhat similar to hand, foot, and mouth disease in people—is transmitted via contact with infected animals or their fluids or eating infected foods or meat. Though it primarily affects cloven-hoofed animals, it's also been known to sicken camels and even elephants.

The economics of horseshoe crab blood

Horseshoe crabs are older than dinosaurs and have survived five mass extinctions that wiped most life from the planet. But it's only now that their future as a species is in danger. This blood, worth about $60,000 per gallon, is hyper-sensitized to certain bacteria that are fatal to humans. This 17-minute podcast dives into humanity's pursuit of horseshoe crab blood, a "somewhat magical" mixture heavily relied on by the pharmaceutical industry.

China is producing many peptides or peptide components sold in the US

In Silicon Valley, in particular, peptides have taken off, and are often coming from China—even though many of the products are unproven for their purported uses.

Deer don't get infected with Lyme disease—but ticks do feed on them

Adult ticks feed on white-tailed deer and also lay eggs on the animals, but the deer don't get sick with Lyme disease. Research published in 2023 offered new insights into why deer don't get sick from Lyme disease: It appears that the quadruped may have specific not-yet-identified immune system proteins in their blood serum that kill the bacterium.

How cigarettes took over China

In 2022, China had a fifth of the world's population and bought nearly half of the world's cigarettes. This investigation explores how China became plagued by tobacco consumption, something epidemiologists say will strain the country's health system...

How fecal transplants work

1,700 years ago, Chinese alchemist Ge Hong was renowned for his soup that could cure diarrhea-stricken patients. It had a surprising secret ingredient: feces. While it might seem unwise to consume feces, exciting new research suggests that taking...

The 2026 Ebola outbreak in the DRC is spurring new Ebola vaccine development for the Bundibugyo species.

Shrunken human heads were once a valuable commodity

In the Ecuadoran Amazon of the 1800s, shrunken human heads had spiritual significance. As outsiders became fascinated by the exotic practice, head shrinking became commercialized, and counterfeit shrunken heads were common. By the mid-1940s, shrunken heads could be traded for guns. (Some users may experience a paywall.)

Washington systematically introduced and popularized mule breeding in the United States

Known as "the father of the American Mule," Washington imported a prized Spanish donkey and bred it with a female horse at Mount Vernon. He promoted mules as stronger, more efficient farm animals, helping spread their use across the South and transforming American agriculture.

Why there’s barely any cheese in traditional East Asian food

East Asian cuisine has historically been cheese-free, but why? Several unique circumstances combined to limit—or eliminate—the dairy product in dishes from Japan, Korea, China, and other nearby countries: Livestock were seen as working animals rather than nutritional sources, and most people were lactose intolerant. As Western cuisine becomes more popular globally, though, cheese is making its way into more East Asian diets.

Larger animals like giraffes, elephants, and blue whales have developed a unique defense against cancer, a phenomenon known as Peto's Paradox

Collagen supplements have become a multibillion-dollar industry

Beginning in our 20s, the amount of this protein in our skin, muscles, and connective tissue declines. But independent, high-quality studies—like those that are double-blind—have not yet shown a significant association between their use and evidence of it improving skin elasticity, reducing wrinkles, or combating hair loss. Some collagen supplements do seem to help with joint pain and knee function, but NPR cautions that studies on that purpose are industry-funded.

Mycotoxins are toxic compounds produced by fungi—some show up in food

About a quarter of the world’s agricultural products are contaminated with mycotoxins. Some of these compounds can cause serious health problems, including cancer, so the US government has set up monitoring programs to detect them in our food and in animal feed. Humans can become ill if they eat contaminated food, but also if they ingest products from animals that had previously consumed these toxic compounds, such as milk from a cow that ate contaminated corn.

Global xenotransplantation market may already be valued at more than $13B

With more than 100,000 people on the waiting list for organs at any given time in the United States, there's a known demand for organ transplants. Some estimates put the value of the global xenotransplantation market above $13B in recent years—and project the market to continue growing.

A year's name is determined by the 12-year Chinese zodiac cycle

According to Lunar New Year traditions, the coming year gets its name based on the 12-year Chinese zodiac cycle. The animals, in order, are rat, ox, tiger, rabbit, dragon, snake, horse, goat, monkey, rooster, dog, and pig. 2026 is the Year of the Horse, an animal known for its strength and momentum, while 2027 will be the Year of the Goat.

Breaking down the health effects of the El Niño-Southern Oscillation

Second only to the seasons, ENSO is the most significant source of variability in global climate, shifting rainfall and temperature patterns, particularly in Africa, Latin America, and South and Southeast Asia. The incidence of vector-borne diseases like malaria, respiratory diseases related to wildfire smoke, food insecurity, and drought-related health and nutritional impacts has been observed to be affected by ENSO.

Hear how the Black Death reshaped Europe's economy

The Black Death killed tens of millions across Europe, but the labor shortages that followed shifted economic power. With fewer workers available, survivors demanded higher wages and better conditions—sparking what historians call a medieval “Golden Age of Labor.”

Farm animals help maintain the grounds at Chicago's O'Hare International Airport

Since 2013, a herd of goats, sheep, and a donkey have grazed on the scrub vegetation at the airport. In the process, they also help keep out animals that can be dangerous for pilots, like coyotes.

See the evolution of Ebola vaccine and treatment development

The recently approved vaccine and treatments against Ebola are the result of many years of investments and have reshaped how the world addresses Ebola outbreaks. Four drugs were tested in the midst of the 2014 outbreak. Two proved to be so effective the clinical trial ended early. The vaccine proved effective during the 2018-2020 outbreak in the DRC.

A podcast detailing the drug markets of East and Southern Africa

The African continent plays a critical role in the global illicit drug market. Often forgotten when discussing drug trafficking, organized criminal networks in Africa have established relationships with other criminal organizations around the world....

The okapi was once considered a cryptid, or an animal with an unverified existence

Similar to dragons or Bigfoot, the okapi was once believed to be a mythical animal, known colloquially as an "African unicorn." Its confusing features include zebra-like legs on a donkey-esque body with a giraffe-like head. However, this animal is both real and quite cute.

Hookworm infection, though risky, may help fight certain autoimmune conditions by tamping down the immune system's inflammatory response.

Indefinite cloning of some endangered species may not sustain their longevity because cloning success rates decrease as genetic mutations accumulate.

See what regions report new leprosy cases

This graphic shows the burden of leprosy by region for 2023, based on data provided from the World Health Organization, which collates this information. Southeast Asia leads in the number of cases by region. (Some readers may experience a paywall.)

Cultural norms about how to handle the bodies of loved ones in communities in West Africa have hampered Ebola responses.

Read a deep dive on the 'all-purpose healing' peptide BPC-157.

Volcanic activity may have triggered the Black Death by spewing gases that led to crop failures in Europe, thus forcing the import of grain ships with plague-infested fleas.

NBA superstar Victor Wembanyama spent the 2025 summer training with monks in central China to enhance his body and mind.

Poison ivy was sent to Europe in the 1600s as an exotic, ornamental oddity, where it was purposefully grown in the English royal gardens at Kew, the Faculty of Medicine in Paris, and a few other locations.

Telehealth demand for GLP-1s for weight loss is booming as consumers seek easier access.

The American cockroach is actually from Africa, an apparent hitchhiker aboard ships carrying enslaved people, with evidence suggesting the bug may have arrived in the New World as early as the 1600s.

Coral reefs get their colors from zooxanthellae—microorganisms that line corals' digestive tracts and provide them with sugars in exchange for a home within this protective tissue.

In 2018, 26-year-old missionary John Allen Chau was killed by tribesmen after attempting to reach and evangelize on India's isolated North Sentinel Island

About 2,000 US babies are born annually without some portion of their limbs, potentially leading to a lifetime of pricey prosthetics.

Bone marrow (soft tissue found inside certain bones) generates roughly 500 billion new blood cells each day

While El Niño moves warm Pacific Ocean waters east along the equator, La Niña moves them west, shifting where rainfall will become more common for months.

See how Budweiser's famous Clydesdales spend their days at Warm Springs Ranch, where roughly 70 to 80 of the beer brand's giant horses can be found at any given time.

Electrical grids worldwide must double their power delivery capacity by 2050 to meet surging demand from AI and electric vehicles.

The US dollar is the most widely circulated currency in the world, and is involved in nearly 90% of global transactions

Art theft is the third-largest source of criminal revenues worldwide, thanks in part to the subjective nature of valuing a work of art.

20,000 letters to the advice columnist 'Dear Abby' provide insight into prevailing sex, religion, and LGBTQ fears, anxieties, and concerns from the 1950s onward.

11 people died from firework injuries in the US in 2024.

'Shogun,' a 1980s TV series, helped popularize sushi in the US by stimulating an American interest in Japanese culture.

The identity of the Tank Man in the iconic photo from the 1989 Tiananmen Square protests remains unknown and was possibly killed.