A March 28 letter signed by 49 NASA retirees including six Apollo astronauts among whom were moonwalkers Charles Duke and Harrison Schmitt; Johnson Space Center directors Gerald C. Griffin and Christopher C. Kraft and Space Shuttle Program director Leroy Day has been sent to the agency asking it refrain from including unproven remarks in public releases and websites concerning the claim that human activity is causing global warming.
“The unbridled advocacy of CO2 being the major cause of climate change is unbecoming of NASA’s history of making an objective assessment of all available scientific data prior to making decisions or public statements,” the letter says “We feel that NASA’s advocacy of an extreme position, prior to a thorough study of the possible overwhelming impact of natural climate drivers is inappropriate.”
The letter and signatories can be found here.