The Arctic is a tough place, but polar bears make it home. They have thick fur and lots of fat to keep warm. A mother and cub explore the snowy landscape. But climate change is making things harder for polar bears . The ice is melting, and they…

Close-up of a platypus in a river, showing its duck-like bill, beaver-like tail, and glowing effect around its hind legs.   The platypus ( Ornithorhynchus anatinus ) is one of nature's most unusual creatures. It's a mammal that seems to defy…