James Hansen, director of the US space agency’s Goddard Institute for Space Studies, said that officials at NASA headquarters had ordered the public affairs staff to review his forthcoming lectures, papers, postings on the Goddard website and requests for media interviews, the New York Times reported Sunday.
“They feel their job is to be this censor of information going out to the public,” said Hansen, who told the paper he would ignore the restrictions.
“Since 1988, (Hansen) has been issuing public warnings about the long-term threat from heat-trapping emissions, dominated by carbon dioxide, that are an unavoidable byproduct of burning coal, oil and other fossil fuels. He has had run-ins with politicians or their appointees in various administrations, including budget watchers in the first Bush administration and Vice President Al Gore,” the Times reported.
Hansen told the Times that “efforts to quiet him” had begun in a series of calls after a lecture he gave on December 6, 2005, at the annual meeting of the American Geophysical Union in San Francisco.
“In the talk, he said that significant emission cuts could be achieved with existing technologies, particularly in the case of motor vehicles, and that without leadership by the United States, climate change would eventually leave the earth ‘a different planet’,” the Times said.

BBC
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