U.S. scientists felt pressured to tailor their writings on global warming to fit the Bush administration's skepticism, in some cases at the behest of an ex-oil industry lobbyist, a congressional committee heard on Tuesday.
"Our investigations found high-quality science struggling to get out," Francesca Grifo of the watchdog group Union of Concerned Scientists told members of the House Oversight and Government Reform Committee.
A survey by the group found that 150 climate scientists personally experienced political interference in the past five years, for a total of at least 435 incidents.
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