At JPL's Mars Yard testing area, two spacecraft engineers Matt Robinson (left) and Wesley Kuykendall with test rovers Soujourner at center, test sibling to Spirit and Opportunity, left, and Curiosity, right.

Think Mountain Time’s Confusing? Try Living on Martian Time

Smithsonian’s latest podcast “AirSpace” digs into the zany work schedules of the men and women on NASA’s Mars rover projects

All Praise The Humble Dung Beetle

By recycling and removing feces, these unsung insects make the world go ‘round

An oyster-dominated anti-erosion structure in Texas

As Storms Get Bigger, Oyster Reefs Can Help Protect Shorelines

Municipalities and military bases are using the bivalve to defend against flooding and damage from climate change-driven storms

Nilgai antelope, like the cattle fever ticks they carry, are considered an invasive species in places like Texas.

Why We Should Rethink How We Talk About “Alien” Species

In a trend that echoes the U.S.-Mexico border debate, some say that calling non-native animals “foreigners” and “invaders” only worsens the problem

These Feisty Female Lemurs Fight With Babies on Their Back

In ring-tailed lemur society, it’s the females who call the shots. They live in groups of up to 30 and the alpha female will fight to protect territory

Whether or not fish feel pain has been debated for years. But the balance of evidence says yes. Now the question is, what do we do about it?

It’s Official: Fish Feel Pain

The verdict is in. But will our oceanic friends ever get the same legal protections as land animals?

Few realize that the lovable, cotton-candy-pink amphibian is on the edge of extinction.

Future of Conservation

How to Save the Paradoxical Axolotl

Despite being a common pet and beloved cultural icon, the grinning amphibian is nearly extinct in the wild

Evidence Suggests Stonehenge Was an Elite Cemetery

Scientists have little doubt that Stonehenge functioned as a Neolithic cemetery

Forensic Test Reveals a Mummy’s Travels Before Death

A ground-breaking scientific technique is tracing the life of one of the bog bodies of Northern Europe

Pavel will be on hand for viewing at the Great Cats habitat, rotating with the Zoo's Sumatran tiger and African lions.

Say Hello to Pavel, the National Zoo’s Latest Addition, an Amur Tiger

For the first time since 1948, a 10-year-old male Siberian big cat graces the D.C. menagerie

Low oxygen caused the death of these corals and others in Bocas del Toro, Panama. The dead crabs pictured also succumbed to the loss of dissolved oxygen.

Why Our Oceans Are Starting to Suffocate

A new paper links global warming to diminished oxygen concentrations at sea

A scientific illustration of the Upward Sun River camp in what is now Interior Alaska.

New Research

Genetics Rewrites the History of Early America—And, Maybe, the Field of Archaeology

The genome of an infant from Upward Sun River, Alaska offers tantalizing insight into the story of human migration

An African lion enjoying an afternoon snack in the falling snow of 2012 at the National Zoo.

How Zoo Animals Stay Safe and Warm in the Arctic Blast

From flamingo ‘hot tubs’ to heated termite mounds, zoos have plenty of tricks to keep creatures safe when the forecast freezes over

Gladiator Teeth Reveal Signs of Infant Malnourishment

By all accounts, Roman gladiators were the rock stars of their day, performing in a packed coliseum to a crowd of thousands

This cartoon from Harper's Weekly depicts how opiates were used in the 19th century to help babies cope with teething.

Inside the Story of America’s 19th-Century Opiate Addiction

Doctors then, as now, overprescribed the painkiller to patients in need, and then, as now, government policy had a distinct bias

The Freer Buddha undergoes a CT scan at the National Museum of Natural History. "He wouldn't relax his legs," Donna Strahan recalls with a laugh.

How Science is Peeling Back the Layers of Ancient Lacquer Sculptures

These rare Buddhist artworks were found to contain traces of bone and blood

Hours after witnessing the first Earthrise, Jim Lovell told mission control: “The Earth from here is a grand oasis in the big vastness of space.”

1968: The Year That Shattered America

Who Took the Legendary Earthrise Photo From Apollo 8?

The mission returned to Earth with one of the most famous images in history

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Future of Energy

Future of Energy

Bold new ideas to meet the world’s burgeoning need for power

In the nothingness of space, sound waves have no medium by which to travel.

Science in the Movies

The Science of Silence in ‘Star Wars: The Last Jedi’

The soundless lightspeed attack that baffled some fans was actually the film’s most scientifically accurate moment

The Next Pandemic

When a Medical “Cure” Makes Things Much, Much Worse

In 1960s Japan, a bizarre outbreak of hairy green tongues failed to set off alarms around the world

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