Aging US dams pose risk to thousands

On a cold morning last March, Kenny Angel got a frantic knock on his door. Two workers from a utility company in northern Nebraska had come with a stark warning: Get out of your house.

Russia releases last belugas from 'whale jail'

The last whales held in a notorious facility dubbed the "whale jail" in Russia's Far East were released on Sunday, the institute overseeing the operation said.

Iceland students see chilling reality of melting glacier

Icelandic seventh-grader Lilja Einarsdottir is on an unusual field trip with her class: they're measuring the Solheimajokull glacier to see how much it has shrunk in the past year, witnessing climate change first-hand.

Australians warned worst bushfires may be yet to come

Sydney is facing a "catastrophic" fire threat, authorities said on Sunday, as firefighters in eastern Australia raced to prepare for worsening conditions after ferocious bushfires devastated communities.