“Hansen’s office appears to be somewhat of a rogue operation. It’s clearly a taxpayer-funded global warming advocacy organization,” said Chris Horner, a co-founder of The American Tradition Institute, which filed the lawsuit. “The real issue here is, has Hansen been asking NASA in writing, in advance, for permission for these outside activities? We have reason to believe that has not been occurring.”

The lawsuit claims Hansen privately profited from his public job in violation of federal ethics rules, and NASA allowed him to do it because of his influence in the media and celebrity status among environmental groups, which rewarded him handsomely the last four years…

Federal rules prohibit government employees from receiving certain types of income outside their job. Employees are required to file Form 17-60 in writing before any outside activity. And annually, they’re required to submit Form SF 278, after receiving outside compensation.