Eric Walker removed Climate change, atmospheric temperature and helicopters from Climate change and atmospheric temperature

Eric Walker placed Climate change, atmospheric temperature and helicopters under Climate change, atmospheric temperature and aviation

Eric Walker added It’s Too Hot to Fly Helicopters and That’s Killing People to Climate change, atmospheric temperature and helicopters

Eric Walker placed Climate change, atmospheric temperature and helicopters under Helicopters

Eric Walker added Climate change, atmospheric temperature and helicopters to Climate change and atmospheric temperature