Wallace S. Broecker CC '53 MA '54 PhD '57 (better known was Wally) was the Newberry Professor of Earth & Environmental Sciences. He was on the Columbia faculty since 1959, and works with the Earth Institute and Lamont-Doherty Earth Observatory. He was interested in the role of oceans on climate change, and is known for popularizing the term "global warming". Most undergraduates got to know him through Frontiers of Science. He wrote the book "Geochemistry for a Habitable Planet", which is the basis of a course by the same name at Columbia and Harvard.
Professor Broecker has a suite of offices in the new Gary C. Comer Geochemistry Building named after him.