Twenty years ago last week scientist James Hansen was the first person to recognise and highlight the phenomenon of global warming.

SCIENTISTS fear global warming has passed an ominous tipping point after Nasa satellite data showed the already relentless melting of the Arctic increased greatly during the northern hemisphere’s hot summer months.

Former US presidential candidate Al Gore is in London to announce a new climate change initiative alongside Richard Branson.

Two US government agencies are investigating whether the Bush administration tried to block government scientists from speaking freely about global warming and censor their research, a senator says.

THE Bush administration is trying to stifle scientific evidence of the dangers of global warming in an effort to keep the public uninformed, a Nasa scientist said yesterday.

The Bush administration is trying to stifle scientific evidence of the dangers of global warming in an effort to keep the public uninformed, a Nasa scientist said yesterday.

Soot pouring out of trucks and chimneys is having a major worsening effect on global warming, scientists said today.