15:29 15 October 2009

The birth of the US mountain chain may have led to a major ice age and a mass extinction

15:03 15 October 2009

Stinging cells can be used as tiny needles to inject drugs into the skin – sea anemone face creams should be available to buy next year

14:28 15 October 2009

Psychologists show that people turn nasty when influence and incompetence collide

14:17 15 October 2009

Lobbying has led to Congress considering tariffs on developing nations, which could be a deal-breaker at December's climate change talks in Copenhagen