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.
Warren Elliot Henry Dr. Warren Henry (February 18, 1909 – October 31, 2001) was an American physicist who made significant contributions to the advancement of science and technology and education, training and mentoring several generations of physicists. Nearly seven decades of work in the fields of magnetism and superconductivity have earned him praise as one of the most eminent African-American scientists in U.S. history.