Nice talk by John Baez (check out the PDF he links to!) putting together some things I wondered about myself regarding global warming (”Now it’s cold. What’s wrong with a little warming?”) and one of the answers (”Species have been migrating north at 6 kilometers per decade since 1950. *They can’t keep up*: since 1975, climate zones have been moving north at 4 kilometers per *year*!”).
Via O'Reilly Radar ¹.
#Slides #Environment #GlobalWarming