Probe into Bush govt climate-change 'gag'

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.

Democrat Frank Lautenberg said he was informed that the inspectors general for the Commerce Department and the National Aeronautics and Space Administration (Nasa) had begun "co-ordinated, sweeping investigations of the Bush administration’s censorship and suppression” of federal research into global warming.