This is good news. For one thing, we can learn from "los indios" how to create soil instead of destroying it. (Agribiz tends to "mine" soil and therefore destroy it.) Secondly, bio char soils sequester carbon.
The charcoal, acting a lot like humus, had been colonized by myriad microbes, fungi, earthworms, and other creatures; these soil organisms produced carbon-based molecules that stuck to the charcoal, gradually increasing the soil's carbon content. ... Crops have been shown to grow 45 per cent greater biomass on unfertilized terra preta soil versus poor soil fertilized with chemical fertilizers. Page 70, Organic Gardening, Dec/Jan 2011So if we create bio char from organic waste that goes to landfills now, we help sequester carbon while we farm organically and increase crop yields. A triple win! And a solution to one of the problems created by peak oil. Chemical fertilizers are made from oil - and now we don't need them!