Sometimes it nice to just kick back and take it slow. Really slow. So what if evolution had the same mindset, and decided to take its time before getting rid of some prehistoric creatures? What if the ...

Huge tunnels under southern Brazil and northern Argentina were potentially made by giant, Ice Age sloths for refuge and rest ...

(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 ...

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 ...

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 ...