Wildlife

Although the asteroid strike that created Chicxulub crater in modern-day Mexico dramatically affected life on Earth, the fiery crash isn't the whole story of the fate of the dinosaurs.

We Still Don’t Know Why the Reign of the Dinosaurs Ended

The asteroid strike on the Yucatán Peninsula 66 million years ago is only part of the story

Signals from other workers can tell ants when and where to fan out and search for food.

Ant Colonies Retain Memories That Outlast the Lifespans of Individuals

An ant colony can thrive for decades, changing its behavior based on past events even as individual ants die off every year or so

The Best Places to See Reindeer Around the World

From Norway to Alaska, here's where to see members of Santa's herd in person

Ichthyosaurs (Greek for "fish lizard") were large marine reptiles that lived alongside the dinosaurs during most of the Mesozoic era.

Like Whales and Dolphins, Prehistoric 'Fish Lizards' Kept Warm With Blubber

A new analysis of a pristine ichthyosaur fossil reveals that the prehistoric marine reptile had a layer of insulating fatty tissue

A new exhibition featuring rare books from the Smithsonian Libraries examines the complex history and evolution of big game hunting.

The Complicated History of the Human and Elephant Relationship

With the new exhibition, “Game Change,” Smithsonian Libraries delves into 150 years of hunting and conservation

Baleen is the soft, hair-like structure on the upper mouth of whales, such as the humpback whale in this photo, which allows them to trap prey in their mouth.

Prehistoric Whale Jaw Bone Sheds Light on the Evolution of Baleen

Hidden in a museums’ collections for years, a fossil provides a link between past and present feeding mechanisms

If Light Can't Escape Black Holes, How Do We Get Photos of Them... and More Questions From Our Readers

You asked, we answered

A sea turtle swimming by bleached corals of the Great Barrier Reef near Heron Island off the east coast of Australia.

Coral Larvae Cryogenically Frozen and Thawed for the First Time

Warming oceans are killing the world’s reefs, but scientists may have found a way to help them get out of hot water—by putting corals into a deep freeze

The marsupial lion (Thylacoleo carnifex) stalked Australian forests tens of thousands of years ago.

How a Changing Climate May Have Killed Off the Marsupial Lion

The fearsome predator, related to koalas and wombats, ruled the wilds of Australia until the loss of its habitat helped drive it to extinction

A figure representing the Kayentatherium babies found with an adult specimen. They are the only known fossils of babies from an extinct mammal relative that lived during the Early Jurassic.

Weasel-Like Fossils Reveal Evolutionary Clues of the First Mammals

A protomammal known as <i>Kayentatherium</i> was discovered with 38 babies in 185-million-year-old rock

The “headless chicken monster” is actually a type of sea cucumber.

Science in the Movies

Fantastic Things We Learned This Year About Fantastic Beasts of the Real World

The second iteration of the “Fantastic Beasts” movie series comes out this week, but why wait for the movie when you can get a glimpse of the real thing?

Princepajaro, a male California sea lion, swims in a pool during treatment for leptospirosis at The Marine Mammal Center in Sausalito, CA. When a leptospirosis outbreak occurs, the Center’s scientists study the disease to learn more about what causes an outbreak and how we can improve treatment for infected animals.

Major Disease Outbreak Strikes California Sea Lions

Leptospirosis afflicts sea lions on a semi-regular cycle, but warming waters and migrating fish could make the marine mammals more susceptible

Baby bats are born tipping the scales at a third of their adult weight, and since mama bats have to carry them until they can fly, at which point they are nearly full-grown, it’s no wonder they start to get a bit physical.

Mama Bats Literally Nudge Their Babies Out of the Roost

Researchers observed mother bats repeatedly prodding their young to motivate them to fledge

In areas made up of less than 70 percent native plant biomass, Carolina chickadees will not produce enough young to sustain their populations. At 70 percent or higher, the birds can thrive.

Ecologists Have this Simple Request to Homeowners—Plant Native

A new study shows how quickly songbird populations fall off when gardens are planted with exotic trees and shrubs

A North Atlantic right whale rests at the ocean’s surface. With an estimated 100 reproductive females remaining, the species could be unable to reproduce naturally in 20 years.

The Plight of the Right Whale

With dwindling numbers due to snags in lobster traps and collisions with ships, the right whale is looking for a way to make a comeback

Eighty years ago, Seabiscuit trounced Triple Crown winner War Admiral.

Scientists Extract DNA From Seabiscuit's Hooves To Figure Out How He Was So Fast

Eighty years ago, the horse famously trounced Triple Crown winner War Admiral. Did genetics make him an unlikely success?

Bull Moose, Grand Teton National Park, Wyoming, USA by Isaac Spotts (Youth Photographer of the Year): "Cautiously, I slid into the water to be eye-level with them."

Peer Through the Lens of the World's Best Nature Photographers

Sixty images, including the winners, from the 23rd annual Nature's Best Photography Windland Smith Rice Awards go on view

Gourds come in all shapes and sizes—some sweet and delicious, some stiff and bitter, and some that are just plain odd.

Halloween

The Science Behind Decorative Gourd Season

Gourds are the runts of their family of fruits, too tough and bitter to eat, but they remain one of the most popular crops of fall

To prevent animal species from going extinct, some ecologists suggest introducing them to urban environments to live alongside humans.

To Save Endangered Species, Should We Bring Them Into Our Cities?

Some ecologists believe our best chance to preserve biodiversity is to introduce non-native species to cities—but others warn of unintended consequences

Buffaloes at Rest recalls a time when bison were plentiful. When the print was created in 1911, only about 1,350 remained.

The Bison Returns to the Great American Plains

After years of fierce debate, the West’s greatest symbol will again roam the countryside

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