The right of some rich countries to keep using so called "hot air" carbon permits could hamper progress at UN climate talks starting today in Qatar.

A second person has died from a new respiratory illness similar to the Sars virus, according to the World Health Organization.

A US start-up aims to mimic a desert beetle to create a self-filling water bottle capable of drawing moisture from the air.

A court challenge delays plans to expel a Texan student for refusing to wear a radio tag that tracks her movements.

Seeing someone scratch an itch could make you feel itchy too, a study suggests.

The first evidence of ocean acidification affecting marine wildlife has significance for the future, say scientists.