4 ms·
Charles Mann had a really good book on the pre-Columbian Americas back in 2005 which covered this as well as a bunch of fascinating other things.
by Symmetry 3y ago
Charles Mann had a really good book on the pre-Columbian Americas back in 2005 which covered this as well as a bunch of fascinating other things.
- davidw 3y agohttps://en.wikipedia.org/wiki/1491:_New_Revelations_of_the_Americas_Before_Columbus https://en.wikipedia.org/wiki/1491:_New_Revelations_of_the_A...
- hamburga 3y agoFrom what I remember it was just a tease at the very end of the book (1491). It seemed to be on the frontier of the research at the time the book was published. They knew about the existence of black earth (terra preta) but were really only speculating about how much human effort and over how much time was involved to create it.