The sloth may seem lazy, but its ancestors were anything but. In this video, evolutionary trade-offs reveal how energy ...

Harpy eagles are among the strongest birds on Earth, capable of capturing prey nearly their own size. Their enormous talons ...

The northern and southern maned sloths may look very similar from the outside, but their genomes reveal different stories: The two species have faced very distinct conditions in Brazil's Atlantic ...

Larisa R. G. DeSantis received funding from the National Science Foundation, the Guggenheim Foundation, and Vanderbilt University. DeSantis is also a research associate at the La Brea Tar Pits and ...

Getting your Trinity Audio player ready... Denverites willing to brave the heat and visit the Denver Zoo Conservation Alliance this summer may be able to sneak a peek at a new baby sloth snoozing and ...

Today, sloths are slow-moving, tree-dwelling creatures that live in Central and South America and can grow up to 2.5 feet long. Thousands of years ago, however, some sloths walked along the ground, ...

WICHITA, Kan. (KWCH) - A prehistoric discovery near Hays is shedding some new light on a giant ground sloth species that lived more than 10,000 years ago. A study published Monday in the peer-reviewed ...

🛍️ The best Cyber Monday deals you can shop right now (updating) 🛍️ By Laura Baisas Published May 23, 2025 10:00 AM EDT Get the Popular Science daily ...

The sloth family tree once sported a dizzying array of branches, body sizes and lifestyles, from small and limber tree climbers to lumbering bear-sized landlubbers. Why sloth body size was once so ...

Giant sloths with razor-sharp claws and as large as Asian bull elephants once roamed the Earth, snacking on leaves at the tops of trees with a prehensile tongue. Now, scientists have figured out why ...