The iris hypothesis was proposed by an atmospheric physicist who was professor at what university?
Iris hypothesis: The iris hypothesis is a hypothesis proposed by Richard Lindzen et al. in 2001 that suggested increased sea surface temperature in the tropics would result in reduced cirrus clouds and thus more infrared radiation leakage from Earth's atmosphere. Richard Lindzen:  From 1983 until his retirement in 2013, he was Alfred P. Sloan Professor of Meteorology at the Massachusetts Institute of Technology.
Massachusetts Institute of Technology