Homo heidelbergensis, a species whose skull is pictured here, likely lived in regions that overlapped with Neanderthals in Europe and Homo sapiens in Africa—according to climate modeling results released this week.

How Did Climate Change Affect Ancient Humans?

Sophisticated climate models were paired with evidence from the archaeological record to reveal where ancient humans may have lived and evolved

Bon Ami Mine is located in Little Switzerland, North Carolina, about 50 miles northeast of Asheville.

Black Lights Turn This North Carolina Mine Into a Psychedelic Wonderland

The Bon Ami Mine’s deposits of the mineral hyalite glow fluorescent green under ultraviolet light

Geologic processes have led to changes in the water and gases released by mudpots, geysers and springs—like this one.

Five Big Changes Scientists Have Documented During Yellowstone National Park’s 150-Year History

Scientists have monitored the region closely for generations, and these are some of the most dramatic shifts they’ve seen

This mural outside of an outfitter's office illustrates the snaking mouth of Mosquito Bay.

Puerto Rico

Puerto Rico’s Bioluminescent Bays Are Brighter Than Ever

The nightly light shows have rebounded from Hurricane Maria’s devastating blow

Cycads growing in Litchfield National Park in Australia.

Many of These Plants Older Than Dinosaurs Face Extinction

Cycads have changed a great deal since they first appeared around 280 million years ago, and habitat loss and illegal trade are now threats

To many people, Henrietta Lacks, painted by Kadir Nelson in 2017, symbolizes inequity in medicine. Lacks died from cervical cancer in 1951, but her tumor cells— used in research without her permission—would enable medical advances, including the polio vaccine.

Race in America

The Historical Roots of Racial Disparities in American Health Care

A new documentary from the Smithsonian Channel, ‘The Color of Care,’ produced by Oprah Winfrey, shines a light on medicine’s biases

An artists's take on the insect

The Quest to Find the World’s Largest Bee

The rediscovery of Wallace’s giant bee uncovers disheartening truths about the tenuous fate of hidden insect species

One reader wonders how birds stay balanced on tree branches while they’re asleep.   

Ask Smithsonian

How Do Birds Stay Upright When They Are Sleeping?

You’ve got questions. We’ve got experts

Bald eagles are intensely social in spite of also being fierce predators. Some 500 live near the remote fishing port of Dutch Harbor, Alaska.

Planet Positive

The Bald Eagle’s Soaring Return Shows That the U.S. Can Change for the Better

The true meaning of a national symbol

Biologists of the past often explained the vast spectrum of animal genitalia with "lock-and-key": the hypothesis that vaginas and penises had primarily evolved to fit into each other mechanically. Today, there is a growing appreciation for the myriad of forces acting on genitals.

Why Have Female Animals Evolved Such Wild Genitals?

From ducks to dolphins, females have developed sex organs that help them deter undesirable suitors and derive pleasure from non-reproductive behavior

Male Svalbard walruses cluster by the shore. Each weighs an average of about 3,000 pounds and is up to ten feet long.

Planet Positive

A Welcome Comeback for Norway’s Walruses

A hunting ban has fostered the return of a nearly extinct species

Lions spritzed with the hormone oxytocin stayed closer together.

Planet Positive

Can Spraying Lions With the ‘Love Hormone’ Help Them Live Together?

Researchers administered oxytocin to captive animals, and preliminary results showed the big cats were less hostile towards strangers

A rare sighting of a northern spring salamander on migration night. These nocturnal creatures spend their days hiding under logs and stones.

Planet Positive

Why Did the Salamander Cross the Road?

To reproduce, of course. And a band of volunteers gathers at night to help it—and countless other amphibians—get to the other side

A vessel nears the commercial wind farm 3.8 miles off the coast of Block Island.

Planet Positive

This Historic Community Is Pushing the Nation Toward a Wind Power Revolution

Block Island, off the New England coast, overcame political strife to lead the way on energy independence

Dried cochineal insects — shown here in the center of the photo — can be processed to create several natural dyes such as carmine and cochineal extract. These products get their red hue from carminic acid, a chemical found within the insect.

Scientists Are Making Cochineal, a Red Dye From Bugs, in the Lab

Used to color foods and cosmetics, carminic acid is traditionally ‘farmed’ from an insect. But researchers are moving to engineer it in microbes

A captured fisher is released after undergoing sedation and physical examination, a part of the Hoopa Valley Tribe’s longstanding efforts to monitor the culturally important species.

Inside the Hoopa Valley Tribe’s Quest to Understand a Rare Carnivore

The tribe maintains some of the most detailed documentation of fishers in North America

Eileen McSaveney (left) and Terry Tickhill (right) use a hand augur to drill Lake Vanda, Wright Valley, Antarctica, during the 1969-1970 field season. Water collected during this effort was used to date the lake.

Ten Pioneering Women of Antarctica and the Places Named for Them

These coves, peaks, glaciers and other landmarks honor female explorers and scientists who have contributed to our understanding of the continent

Boas constrict their prey to death.

How Boa Constrictors Breathe While Squeezing the Life Out of Their Prey

Researchers outfitted the snakes with electrodes and scanned them using X-rays to see how the flexing predators managed to take in air

A Spinosaurs hunts a Onchopristis underwater. Dense bones helped the predator swim at depth.

Heavy Bones Helped Some Spinosaurs Swim

The crock-snouted dinosaurs were just as capable in the water as on land

For many behind the so-called anti-vax movement, faith is the ultimate protection. At an anti-shutdown rally in Harrisburg, Pennsylvania, a protester painted the hood of his truck with the motto “Jesus is my vaccine.”

What the History of Science and Religion Reveals About Today’s Divisive Covid Debates

A new Smithsonian book and exhibition explores the ongoing conflicts and reconciliations between faith and technology in American life

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