Donald Rapp, Former Full Professor of Physics and Environmental Engineering: The climate of the 19th century wasn’t all that great. It was particularly cold in mid-northern latitudes. Climates always change regardless of human activity. The earth has warmed in the past 120 years, mostly at high northern latitudes; far less in the tropics or southern hemisphere. In many ways, the climate today is “better” than it was in 1850.
