William Happer speaks at Hillsdale College’s National Leadership Seminar on February 19, 2021, in Phoenix, Arizona.
How to Think About Climate Change | William Happer William Happer Professor of Physics Emeritus, Princeton University. has published many papers on the subject of the physics of green house gases in the earth’s atmosphere. In my option he is one of the world’s most knowledgeable scientists is the world on this subject.