Hansen is also currently an adjunct professor in the Earth and Environmental Sciences department at Columbia University. He is best known for his testimony on climate change to congressional committees in the 1980s that helped raise broad awareness of the global warming issue. He is a vocal critic of the second Bush Administration's ideology on climate change.
Hansen was trained in physics and astronomy in the space science program of Dr. James Van Allen at the University of Iowa. He obtained a B.A. in Physics and Mathematics with highest distinction in 1963, an M.S. in Astronomy in 1965 and a Ph.D. in Physics, in 1967, all three degrees from the University of Iowa. He participated in the NASA graduate traineeship from 1962 to 1966 and, at the same time, between 1965 and 1966, he was a visiting student at the Institute of Astrophysics at the University of Kyoto and in the Department of Astronomy at the University of Tokyo.
- "It's unbelievable. "I thought he had been misquoted. It's so unbelievable. NASA is the world's preeminent organization in the study of Earth and the conditions that contribute to climate change and global warming," Griffin said in a statement. "The agency is responsible for collecting data that is used by the science community and policy makers as part of an ongoing discussion regarding our planet's evolving systems. It is NASA's responsibility to collect, analyze and release information. It is not NASA's mission to make policy regarding possible climate change mitigation strategies. As I stated in the NPR interview, we are proud of our role and I believe we do it well." Source: Clayton Sandell & Bill Blakemore. "NASA's Top Official Questions Global Warming: NASA Administrator Michael Griffin Questions Need to Combat Warming." ABC News. May 31, 2007. News Report Comment about NASA Administrator Michael Griffin's suggestion that we cannot know if global warming is bad.