Earth's recent climate spiral.

[Leonardo17]

They didn't, they created an engineered substrate through the release of massive amounts of atmospheric carbon.  You know what, never mind.  Fuck it.

See everyone at the end of the world party.

The amount of carbon they released in the making of terra preta was impressive for Stone Age population, but trivial next to the current industrial rate and volume of release.    The self-regenerative properties of terra preta greatly contributes to lowering the amount of initial burning needed to get the process started.

- Similar ancient and eco-friendly ways of agricultural production are present in many parts of the world. In fact at the beginning of the century all agricultural methods were traditional and quite similar to this “terra negra” method of agriculture.
    Of course more modern agricultural methods have increased agricultural production a lot. So we cannot seek to totally eliminate modern methods of agriculture. But the issue is this:
Rectangular agricultural spaces, with chemical fertilizers and intensive agriculture are gradually becoming sand. Sand is when there is no biomass left in the soil. So you have to put even more chemicals and even more water into it in order to be able to grow anything in this type of soil.
   The alternative to this is to have soils with at least 3% of organic material in it (living organisms and to have trees around agricultural fields that will reduce erosion, create some shadow (that will protect these organisms) and attract and trap rainwater. With such soils you need less irrigation and much less pesticide and fertilizers. I think this should be the new method of agriculture because even in much religious societies like India the number of farmers committing suicide has increased a lot in this century.
   So this is one of the many methods that are available to us even we are to keep inhabiting this spaceship of ours