Ancient sloths lived in trees, on mountains, in deserts, in boreal forests and on open savannas. Some grew as large as elephants.

Giant Sloths and Many Other Massive Creatures Were Once Common on Our Planet. With Environmental Changes, Such Giants Could Thrive Again

If large creatures like elephants, giraffes and bison are allowed to thrive, they could alter habitats that allow for the rise of other giants

A dark cloud of starlings shapeshifts over Rome.

A Closer Look at the Kestrels, Hedgehogs and Other Wild Animals That Inhabit Rome

From antiquity to modern times, the city has been rife with creatures that creep, slither, scurry and nest among its pillars and palaces

One of the Central Park coyotes trots by with the New York City skyline as a backdrop.

In a Milestone for Manhattan, a Pair of Coyotes Has Made Central Park Their Home

For six years, two photographers have carefully followed the canines and documented their secret lives

A Honduran white bat (Ectophylla alba) flies from its roost.

Ten Stunning Nature Photos From the BigPicture 2025

From the beautiful to the bizarre, this annual photographic showcase shines a light on some of our planet’s most breathtaking species and places

A veery gets ready to rise into the Vermont skies, not long before setting off on an annual migration to the species’ wintering grounds in Brazil.

Scientists Are Tracking Worrying Declines in Insects—and the Birds That Feast on Them. Here’s What’s Being Done to Save Them Both

In Vermont, researchers have investigated the types of creepy, crawly bugs that their avian predators consume and may have found the answers to keeping them both alive

Fishing guide Tori Arnona, 23, holds a redfish caught near Buras in Plaquemines Parish, Louisiana.

Can the Redfish, That Gulf Coast Culinary Icon, Be Brought Back From the Brink?

The Cajun cooking craze nearly wiped out the species native to Louisiana, but conservation stemmed the tide. Now the fish faces new threats

Some sebecids grew to lengths of 20 feet.

After Crocs and Lemurs Went Extinct on the Mainland, Many Survived on Islands for Millions of Years

Isolation allows creatures to thrive as their relatives perish due to the threats present on much larger landmasses

The vision is to use the gate to create extended elephant migration routes that cut across South Africa, connecting green areas with navigation corridors that bypass cities and the rehabilitated gold mine dumps that ring Johannesburg.

In South Africa, a Smart Gate Could Help Connect Elephants’ Fragmented Habitat

An unlikely quartet’s clever contraption may allow the pachyderms to make better use of their range

I have an ancestor who was in Massachusetts in 1640. What is the best way to research ships that arrived before that time? 

How Do I Research Ancestors Who Sailed to America in the 1600s? And More Questions From Our Readers

You’ve got questions. We’ve got experts

Red-shanked doucs are adept communicators, growling with a fixed stare when they’re threatened, or squealing harshly and slapping tree branches when they’re in distress or startled.

This Majestic Monkey Has Become a Beloved Neighbor for Millions in Vietnam

For the critically endangered red-shanked douc, proximity to an urban center has had surprising benefits

A sandhill crane stands over a Canada gosling it adopted in Madison, Wisconsin. Such interspecies adoptions appear to have become more common in recent years.

These Sandhill Cranes Have Adopted a Canada Gosling, and Birders Have Flocked to Watch the Strange Family

Ornithologists and locals wonder what the future holds for this chick being raised by much taller, but still doting parents

During mating season in fall, this male hellbender wanders along the bottom of a stream in North Carolina in search of a den site. Hellbenders rely on pristine streams and well-oxygenated flowing water. As they have declined across much of their range, sights like this have become uncommon.

Why Has This North Carolina Town Embraced a Strange Salamander?

The city of Boone has put a giant mural of the eastern hellbender downtown and its residents often imbibe a local Hazy IPA named after the amphibian

A computer illustration details dog roundworm (Toxocara canis). Humans can pick up the parasite when coming into contact with infected soil or feces.

How Worm-Inspired Treatments Are Inching Their Way Toward the Clinic

Infection by certain wrigglers may reduce inflammation and fight obesity and diabetes. Scientists are working to turn the findings into therapies

A flamingo peeks from behind its feathers at the North Carolina Zoo.

Engineers Are Racing to Harness the Dazzling Magic of Feathers. They Haven’t Solved the Mystery Just Yet

The natural marvels, which do everything from enabling acrobatic flight to insulating against Antarctic cold, continue to inspire new designs and technologies

Before her rescue in 2010, the Asiatic black bear Suki had been kept in a shipping container with 18 other bears. Now, she’s known at her new sanctuary home as a bear who loves to climb up high and survey the open space.

These Asian Bears Were Cut Open for Their Bile. Here’s What’s Being Done to Rehabilitate Them

Veterinarians in Vietnam perform surgeries, prepare special diets and craft recovery routines for moon bears to give them a better life

A baby Atlantic sturgeon caught from Virginia’s James River is measured by Matt Balazik, a research ecologist with Virginia Commonwealth University.

Once in Dire Straits, Atlantic Sturgeon Are Staging a Comeback on the East Coast

From Maine to Florida, the endangered, prehistoric fish is rebounding, but a recent study shows just how vulnerable the U.S. population remains

A grizzly bear walks along a road in Lake Louise, Alberta. 

To Reduce Human and Grizzly Bear Conflicts, Both Species Must Change Their Behavior

Rural Alaskan and Canadian communities are trying to get along with the large mammals

A seal catches a salmon off the coast of Washington State. Scientists are working to determine how much salmon the seals eat.

Salmon in the Pacific Northwest Are Facing a New Threat: Booming Populations of Seals and Sea Lions

The mammals’ return to the region represented a conservation success story, but their appetite for endangered fish is upsetting the balance of a delicate ecosystem

The Blomberg’s tree boa was recently documented in southwestern Colombia for the first time, even as it loses habitat in the nearby rainforests of Ecuador.

This Elusive Snake’s Habitat Is Under Threat in Ecuador. Here’s How Conservationists Are Fighting Back

How do you protect an endangered serpent with a special talent for hiding in plain sight?

Whatever happend to President Franklin D. Roosevelt's tradition of fireside chats?

What Happened to FDR’s Fireside Chats? And More Questions From Our Readers

You’ve got questions. We’ve got experts

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