Climate scientist sees cover-up

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A NASA scientist who said the Bush administration muzzled him because of his belief in global warming yesterday acknowledged to Congress that he'd done more than 1,400 on-the-job interviews in recent years.

James Hansen, director of NASA's Goddard Institute for Space Studies, who argues global warming could be catastrophic, said NASA staffers denied his request to do a National Public Radio interview because they didn't want his message to get out.

But Republicans told him the hundreds of other interviews he did belie his broad claim he was being silenced.

"We have over 1,400 opportunities that you've availed yourself to, and yet you call it, you know, being stifled," said Rep. Darrell Issa, California Republican.

Mr. Hansen responded: "For the sake of the taxpayers, they should be availed of my expertise. I shouldn't be required to parrot some company line."

In a bitter hearing before the House Oversight and Government Reform Committee, which is investigating whether there was political interference into climate science, Republicans and Democrats accused each other of "smearing" the other's witnesses.

High-profile global warming hearings this week will include appearances by former Vice President Al Gore before House and Senate committees.

Mr. Hansen yesterday said the Bush administration threatened him and his office over his stance on global warming.

"It was an oral threat made to a public affairs person in New York and relayed to me," said Mr. Hansen, who is listed as a senior adviser to Mr. Gore and consulted on Mr. Gore's global warming film, "An Inconvenient Truth."

Citing what he called a "growth of political interference," Mr. Hansen said he was forced by NASA officials to deny an interview request from NPR because press officials believed the network to have a liberal bias.