Citizen scientist who first discovered effects of carbon dioxide on global temperatures in 1938.

I’m excerpting a small part of a fascinating, long piece in Wired – describing the research of the early 20th century engineer Guy Callendar – who detected and predicted the greenhouse effect well before it took hold in the mainstream of science. Although Svante Arrhenius had theorized (presciently) about the problem decades before, Callendar made some of the first observations actually demonstrating the effect.
View original post 654 more words