NASA Climate Scientist Says He's Being Silenced

The top climate scientist at NASA says the Bush administration has tried to stop him from speaking out since he gave a lecture last month calling for prompt reductions in emissions of greenhouse gases linked to global warming...He said he was particularly incensed that the directives had come through telephone conversations and not through formal channels, leaving no significant trails of documents...officials at the headquarters of the space agency repeatedly phoned public affairs officers, who relayed the warning to Dr. Hansen that there would be 'dire consequences' if such statements continued...Where scientists' points of view on climate policy align with those of the administration, however, there are few signs of restrictions on extracurricular lectures or writing."