Researchers studying a trail of fossilized footprints on a remote New Mexico salt flat have determined the tracks tell the story of a group of Ice Age hunters stalking a giant sloth. Park naturalist ...

Imagine a sloth. You probably picture a medium-size, tree-dwelling creature hanging from a branch. Today’s sloths – commonly featured on children’s backpacks, stationery and lunch boxes – are ...

Although it sounds like a grade-B science fiction movie, fossils show that our ancestors once hunted and fought giant ground sloths. For the first time, scientists have uncovered fossilized footprints ...

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 ...

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(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Imagine a sloth. You probably picture a medium-size, tree-dwelling creature hanging ...