One Candidate for Wisconsin’s Senate Race Wants to Put the State ‘In the Driver’s Seat’ of the Clean Energy Economy. The Other Calls Climate Science ‘Lunacy’ Democratic candidate Mandela Barnes was the chair of the state’s first task force on climate change. His competitor, Republican U.S. Sen. Ron Johnson, suggested that human-caused climate change was “BS.” Johnson leads in the polls. By Aydali Campa