Thirty two years ago, on this day, July 22, 1991, the Australian radio program “The Science Show” (ABC Radio) had two climate denialists on. Oh joy. (See Robyn Williams letter to The Australian, 1991, Dec 6, p.10). The amount of carbon dioxide in the air was roughly 356.3ppm. As of 2023 it is 423ppm, but check […]