NASA Chief Backs Agency Openness.

A follow-up to a story I included earlier, about a gentleman who claimed that NASA was suppressing some of the information that he was trying to share with the public:

A week after NASA's top climate scientist complained that the space agency's public-affairs office was trying to silence his statements on global warming, the agency's administrator, Michael D. Griffin, issued a sharply worded statement yesterday calling for "scientific openness" throughout the agency.

"It is not the job of public-affairs officers," Dr. Griffin wrote in an e-mail message to the agency's 19,000 employees, "to alter, filter or adjust engineering or scientific material produced by NASA's technical staff."

The statement came six days after The New York Times quoted the scientist, James E. Hansen, as saying he was threatened with "dire consequences" if he continued to call for prompt action to limit emissions of heat-trapping gases linked to global warming. He and intermediaries in the agency's 350-member public-affairs staff said the warnings came from White House appointees in NASA headquarters.

Other National Aeronautics and Space Administration scientists and public-affairs employees came forward this week to say that beyond Dr. Hansen's case, there were several other instances in which political appointees had sought to control the flow of scientific information from the agency.

They called or e-mailed The Times and sent documents showing that news releases were delayed or altered to mesh with Bush administration policies.