environment

Science, Tech & Environment

The UN climate summit opens with a voice from an endangered nation

Leaders from all over the world have gathered in New York to attend the UN Climate Summit. The first thing they heard was an impassioned poem from a mother and activist from the Marshall Islands, a tiny nation in the Pacific that may no longer exists if climate change isn't halted.

Science, Tech & Environment

Trouble for Knut

Knut the Polar Bear has become famous at the Berlin Zoo in Germany. Now he's looking for a new home, because zoo officials say they can't afford to keep him. Anchor Marco Werman finds out more from the BBC's Damien McGuiness in Berlin.