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ciaran54 wrote:'Obviously, one solution is to burn the entire Amazon rainforest, and turn this rich and fertile place into the world's pantry.'
Except of course that rainforest soils tend to actually be quite poor for growing crops, it's the constant layer of leaves etc. that give the nutrients. Once you slash and burn the trees, crops grow well for a couple of seasons and then start to die, necessitating more slashing and burning (I think, it was a long time since I did geography).
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