michael oppenheimer, veteran of climate wars. he is now a professor of geo sciences at princeton university. in 007 he was part of a group of scientists that won the nobel peace price for their work on climate control. thank you for being here. >> thank you for having me. >> if we say, we are heading to 2 degrees, 3 degrees, 4 degrees of warming. if i sit in the room and change the thermostat from 68 to 7 2, i take off my jacket, and that's not a huge amount. >> what hurts us and makes us vulnerable to climate is not the average, it is. treems and the extremes that change a lot when the average just changees a little. so even if earth only warns about 5 degrees fahrenheit, which is the average prediction for this sent century, we will see sea level rising by the amount of 2, 3, 4 feet. on a typical east coach beach that takes away 200, 300, 400 feet of beach horizontally inland. we are likely to see increase in the intensity of frequency of heat waves. you have to remember, heat waves kill. we had one in europe a few years ago th

michael oppenheimer, a veteran of the climate wars. he was chief scientist for the environmental defense fund, and is now a professor of geosciences at princeton university. in 2007, he was part of a group of scientists who won the nobel peace prize for their work on climate change. wonderful to have you here, doctor. >> happy to be here. >> how should we understand, i think when you say to people, okay, we're headed the towards two degrees of warming or three degrees of warming, four degrees of warming. i think to myself, well, i sit in my room and i put the thermostat from 68 to 72, and that's a little different, maybe i take off my jacket, but that's not a huge amount. how should we think about those numbers? >> what really hurts us and makes us vulnerable to the climate is not the average. it's the extremes. and it's the extremes that change a lot when the average just changes a little. so even if earth only warms about five degrees fahrenheit, which is the average prediction for this century, we're going to see sea level rising be