(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Kevin Omland, University of Maryland, Baltimore County (THE CONVERSATION) We humans ...

If you’ve always thought echidnas and platypuses were distant cousins who went their separate ways on land and water, think again. A single fossilized arm bone, found in a remote corner of ...

Add Yahoo as a preferred source to see more of our stories on Google. A platypus has evolved to fit its particular ecological niche. Joao Inacio/Moment via Getty Images We humans have long viewed ...