Climate change as history

In case we thought that climate change was only suggested in recent times, here is a quote from c1840

" Alphonse de Candolle wrote to Asa Gray asking him about the effect of the destruction of the forests in America on the climate."

Asa Gray was the foremost American botanist of the 19thC and Alphonse Pyramus de Candolle was a botany professor at the University of Geneva. His dad was Augustin Pyramus de Candolle who originated the idea of "nature's war", which influenced Charles Darwin and the principle of natural selection.

For anyone interested in the forests of America, read "American Canopy" by Eric Rutkow. A fascinating book on the relationship between Americans and their trees. One of the best books I have ever read.