Matt Ridley on Climate Change

Matt Ridley discusses climate change with host Russ Roberts. Based on his reading of the scientific evidence, Ridley describes himself as a "lukewarmer." He agrees that humans have made the climate warmer but argues that the impact is small or positive over some temperature ranges and regions. He rejects the catastrophic scenarios some say justify dramatic policy responses and reflects on the challenges of staking out an unpopular position on a contentious policy issue.