ABC:

Bush administration officials throughout the government have engaged in White House-directed efforts to stifle, delay or dampen the release of climate change research that casts the White House or its policies in a bad light, says a new report that purports to be the most comprehensive assessment to date of the subject.

Researchers for the non-profit watchdog Government Accountability Project reviewed thousands of e-mails, memos and other documents obtained through Freedom of Information Act requests and from government whistle-blowers and conducted dozens of interviews with public affairs staff, scientists, reporters and others.

The group says it has identified hundreds of instances where White House-appointed officials interfered with government scientists’ efforts to convey their research findings to the public, at the behest of top administration officials.

The report is slated to be released tomorrow at a hearing before the House Science Committee, which is investigating the issue.