The Science of Climate Change

About 40,000 people die in the us every year from traffic related deaths. A speed limit of three miles an hour would also have a huge amount of cost and other airs. We need to ask how much will societies build dikes or make them higher? And if we do climate policy, how much will it cut those costs from flooding versus how much will that climate policy cost us? It's a complicated conversation but not something that hasn't been answered.