How concerned are visitors to this site about this issue, given the recent publicity surrounding James Hansen, the prominent NASA climate scientist ?

In January it was reported that the NASA public affairs staff had been ordered to review Hansen’s public statements and control journalist access to him, with the effect of altering or suppressing his findings.

After some quick internet searches I learned that such events are far more widespread than I thought. Information available at sites including the American Association for the Advancement of Science and National Academy of Sciences reveals numerous similar occurrences. In fact Bill McKibben’s The End of Nature describes an attempt by the White House in 1989 to alter Hansen testimony on climate change.