Welcome to European Tribune. It's gone a bit quiet around here these days, but it's still going.
There is a theory that the Amazon rainforest was an agricultural project of human beans using terra preta (biochar) among other techniques.  Charles Mann's book 1491, as I recall, mentions this.

Solar IS Civil Defense
by gmoke on Wed Jul 3rd, 2024 at 07:48:27 PM EST
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