Imagine a sloth. You probably picture a medium-size, tree-dwelling creature hanging from a branch. Today’s sloths – commonly ...

The extinction of the Pleistocene megafauna may be people’s fault after all, according to a recent study.

Sloths show that slow living sustains nature. Protecting them means preserving the balance of forests. Their story teaches ...

Each year 500,000 people visit New Mexico's White Sands National Monument to hike and frolic among gypsum dunes. Aside from the tourists, few animals in the region get much larger than a coyote or ...

Sloth in prison -- The Great Basin now and then -- A zoologically impoverished world -- Dating an ass -- A stable of ground sloths -- Extinct mammals, dangerous plants, and the early peoples of the ...

Once home to massive creatures like the woolly mammoth and giant beaver, Minnesota’s prehistoric wildlife brings a ...

In a discovery that challenges long-standing views of prehistoric life, scientists have uncovered vast underground tunnels beneath Brazil and Argentina that appear to have been excavated by ...

Largely outshone by fossils of horses, the earliest camels are getting another look from scientists determined to sort out ...