matthew kahn is a professor at the ucla institute of the environment, department of economics, and the part of public policy. he has a ph.d. in economics from the university of chicago. on his blog, which is at greeneconomics.blogspot.com, calls himself a free-market environmentalist. remember, and university chicago economics department i was definitely after reading his book put the emphasis on the free-market. he wrote a book called green cities, urban growth and the environment and his most recent book, climatoplis features cities in the era of climate change. fun facts about matt kahn, he likes to talk about how much he looks like quentin tarantino. [laughter] >> the truth hurts. [laughter] so, matt, here's my question. climatoplis is written in the breezy popular style, and it has a sort of breezy optimism to it. you write at one point and i'm quoting here, the innovative capitalist culture will allow us to make a faludi stifel these cade from climate change most devastating impact. what makes you so sure of that? >> my mother always told me to avoid wishful thinking, and i alway