Dr. Michael E. Mann is Distinguished Professor of Atmospheric Science at Penn State, with joint appointments in the Department of Geosciences and the Earth and Environmental Systems Institute (EESI). He is also director of the Penn State Earth System Science Center (ESSC). 

Mann is the author of several books including his most recent work, The Madhouse Effect, which features cartoons by Pulitzer Prize-winning political cartoonist Tom Toles. Through satire, “The Madhouse Effect” portrays the intellectual pretzels into which denialists must twist logic to explain away the clear evidence that man-made activity has changed our climate.