James Hansen, an adjunct professor at Columbia University, dubbed which famous Serbain-born American physicist "the godfather of black carbon"?
James Hansen James Edward Hansen (born 29 March 1941) is an American adjunct professor in the Department of Earth and Environmental Sciences at Columbia University. He is best known for his research in climatology, his 1988 Congressional testimony on climate change that helped raise broad awareness of global warming, and his advocacy of action to avoid dangerous climate change. In recent years he has become a climate activist to mitigate the effects of climate change, on a few occasions leading to his arrest.
James Ferris James "Jim" P. Ferris (1932 – March 4, 2016) was an American chemist. He is known for his contributions to the understanding of the origins of life on Earth, specifically by demonstrating a successful mechanism of clay-catalyzed polymerization of RNA, providing further evidence for the RNA World Hypothesis. Additionally, his work in atmospheric photochemistry has illuminated many of the chemical processes which occur in the atmospheres of Jupiter and Saturn's moon, Titan.