The Sierra Club donned tinfoil hats at a House committee hearing on Obama climate change activities
Sierra Club, which denies science on fracking, now actually wearing tin foil hats. They say it was a joke. http://t.co/y0WTwdC3OW
— Steve Everley (@saeverley) September 18, 2013
@SierraClubLive @sierraclub @RepFredUpton ROFL, the irony of anti-science doomsayer climate loons wearing tinfoil hats is lost on them
— cryengine1007 (@cryengine1007) September 18, 2013