for tonight's conversations with great minds i'm joined by dr dr michael mann dr mann is a physicist climatologist and professor is currently a member of the faculty at penn state university is the director of penn state's earth science so it's system science center so our command received his undergraduate degree in physics and applied mathematics from u.c. berkeley and both a master's in physics and a ph d. in geology and geophysics from yale university has received a number of honors in awards including selection by scientific american as one of the fifty leading visionaries in science and technology in two thousand and seven dr mann was a joint recipient of the nobel peace prize he's the author of over one hundred fifty peer reviewed publications as well as two books including his latest the hockey stick and the climate wars. dispatches from the frontlines like the man welcome thanks tom it's a pleasure to be here with you thanks for joining us and for writing this brilliant book. before we get into all the science about all of this i'm just curious about you what got you into cli