For most of us, visiting the zoo as a child brings up happy memories of adventures, melting ice cream, and childhood friends.

The odds of extreme cold this winter in the US, Asia and parts of Europe are climbing, threatening to boost energy bills for ...

Christopher Best told his family not to worry about the pictures of polar bears he was snapping and posting on social media ...

Dangerous climate tipping points will threaten food, water and coastlines. They’re irreversible and only radically ...