International authorities are issuing warnings about "sloth fever." Despite the name, it's not contracted via contact with sloths. Rather, you should avoid contact with mosquitoes and biting midges.

Today’s sloths are small, famously sluggish herbivores that move through the tropical canopies of rainforests. But for tens of millions of years, South America was home to a dizzying diversity ...

South American megafauna, from giant sloths to camel-like creatures, survived thousands of years longer than we thought, challenging the idea that they were hunted to extinction by humans ...

We know that the extinction of megafauna, in South America at least, was around 10,000 years ago. This is at least 17,000 years after the arrival of the humans who modified the giant ground sloth ...

SAO PAULO (AP) — Sloths weren’t always slow-moving, furry tree-dwellers. Their prehistoric ancestors were huge — up to 4 tons (3.6 metric tons) — and when startled, they brandished immense ...

A virus found in sloths and spread by mosquitos in South America has now been found in the US. The US Centers for Disease Control issued a warning about the Oropouche virus after 11 Floridians ...

Today, two sloth species dwell in Central and South America. But long ago, dozens of sloth species populated the Americas, all the way from Argentina to Canada. Like modern-day sloths, the smaller ...

U.S. health officials are warning travelers about a potentially deadly insect-borne virus known as sloth fever that has infected 21 U.S. residents returning from Cuba and thousands more in South ...

New discoveries from several archaeological sites in North and South America suggest that ancient people first arrived in the New World much earlier than scientists once thought.

Sloths, the slow-moving inhabitants of Central and South American rainforests, could face extinction by the end of the century due to rising temperatures caused by the climate crisis, a new study ...

Giant sloths used to roam all over North America. ... About 20 million years ago, a large rift opened up between present day Washington state and Idaho, south through parts of Oregon and Nevada.

International authorities are issuing warnings about "sloth fever." Despite the name, it's not contracted via contact with sloths. Rather, you should avoid contact with mosquitoes and biting midges.