Once common along highland streams in Costa Rica and western Panama, the variable harlequin frog, Atelopus varius, is now endangered throughout its range, thanks in large part to a disease caused by the amphibian chytrid fungus.

These Captive-Bred Frogs Are Facing Predators and the Chytrid Fungus to Make It in the Wild

Scientists in Panama release 500 harlequin frogs, some wearing transmitters, in a first attempt to reintroduce the endangered species

Behold, the unsung hero of the Winter Olympic Games: ice.

The Beijing Winter Olympics

The Slick Science of Making Olympic Snow and Ice

Crafting the ideal ice rink or bobsled course takes patience, precision and the skill of an Ice Master

Will blue packets replace pink ones soon?

New Research

Heart-Stopping Arrow Poison Could Be the Key to Male Birth Control

A non-toxic version of the compound interrupts fertilization in rats

Images created by NASA with satellite data helped the U.S. Department of Agriculture analyze outbreak patterns for southern pine beetles in Alabama, in spring 2016.

Can Scientists Forecast Algal Blooms and Pest Outbreaks Like We Do the Weather?

With big data, ecologists have the ability to predict short-term ecological phenomena over the span of days and seasons rather than decades

English Bulldogs illustrate the dramatic turn dog evolution has taken at the hands of humans.

The Evolution of Petface

The same traits that make these dogs adorable threaten their health and well-being

Why the Shift to Farming Ruined This Ancient City’s Health

The switch from a hunter gatherer society to a farming one appears to have resulted in a more sedentary lifestyle for the inhabitants of Catalhoyuk

Healthcare providers leave a village after completion of a culling operation in response to a bird flu outbreak in Budgebudge, West Bengal, India.

The Next Pandemic

The Pandemic Everyone Fears Is Flu In the Wrong Place At the Wrong Time

Governments should constantly be preparing for outbreaks, instead of just hastily responding to threats as they arise

Image from the cover of Emma Byrne's new book, Swearing is Good For You.

The Science of Swearing

A new book explains the neuroscience of why we swear—and how it can sway our listeners

Close-up view of the of jawbone, showing details of the crown topography and dental features.

New Research

Earliest Human Remains Outside Africa Were Just Discovered in Israel

If accepted as Homo sapien, the jaw-dropping jawbone would push back the human exodus out of Africa by nearly 100,000 years

Music might be more universal than we thought.

New Research

Your Brain Knows What Songs Are For, No Matter Where They Came From

Researchers find that people easily recognize lullabies and dance songs from around the world

Dr. Kevin Olival and the USAID PREDICT wildlife team surveying areas for bat trapping at the entrance to a cave in Thailand.

The Next Pandemic

Can Virus Hunters Stop the Next Pandemic Before It Happens?

A global project is looking to animals to map the world’s disease hotspots. Are they going about it the right way?

Ice skates signed and worn by Sonja Henie, the Norwegian figure skater who was instrumental in popularizing the sport. Her impressive array of spins and jumps won her three Olympic gold medals.

The First Ice Skates Weren’t for Jumps and Twirls—They Were for Getting Around

Carved from animal shin bones, these early blades served as essential winter transport

The fruit that bursts with contradictions.

The Toxic Rise of the California Strawberry

Growing this popular fruit year-round has long relied on harmful chemicals. Is there another way?

A Counterintuitive Idea for Treating Severe Depression: Stay Awake

Doctors are finding that sleep deprivation actually helps lift some people out of depression. Now they want to know why

At just 18 months old, young children can show biological evidence of added stress.

New Research

How a Mother’s Depression Shows Up in Her Baby’s DNA

Researchers find that at just 18 months, infants can have cellular damage related to stress

Lava cascades down the slopes of the erupting Mayon volcano in January 2018. Seen from Busay Village in Albay province, 210 miles southeast of Manila, Philippines.

Geology Makes the Mayon Volcano Visually Spectacular—And Dangerously Explosive

What’s going on inside one of the Philippines’ most active volcanoes?

It's not as bad as it sounds.

Sorry, Guys: Your Y Chromosome May Be Doomed

But don’t worry, men aren’t going anywhere

Baber gathering fossils at Mazon Creek, Illinois, 1895, during the first field class at the University of Chicago to which women were admitted.

Women Who Shaped History

The Woman Who Transformed How We Teach Geography

By blending education and activism, Zonia Baber made geography a means of uniting—not conquering—the globe

A Doomed Aircraft Is Left to Fly Until It Runs Out of Fuel

Learjet 35 was a doomed plane, flying miles off course and with passengers and crew presumed dead

From developmental problems to reproductive issues, drug waste is affecting marine wildlife.

How Drugged-Up Shellfish Help Scientists Understand Human Pollution

These involuntary medicine-guzzlers have much tell us about the consequences of pharmaceutical waste

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