James Hansen, director of NASA’s Goddard Institute for Space Studies and author of “Storms of My Grandchildren,” will be on “Viewpoint” tonight to discuss “Perception of Climate Change,” a new study he co-authored with Makiko Sato and Reto Ruedy, which was published in Proceedings of the National Academy of Sciences on Monday, Aug. 6.
From the study:
“We can state, with a high degree of confidence, that extreme anomalies such as those in Texas and Oklahoma in 2011 and Moscow in 2010 were a consequence of global warming because their likelihood in the absence of global warming was exceedingly small.”
Read the full study here.

NASA scientist and climatologist James Hansen takes part in a mock funeral parade during a Climate Change Campaign Action Day on March 19, 2009, in Coventry, England. Photo by Christopher Furlong/Getty Images