PhysOrg reports on how the early inhabitants of the Amazon basin boosted crop productivity by enriching their fields with biochar.
Here’s the whole story:
Former inhabitants of the Amazon Basin enriched their fields with charred organic materials – biochar – and transformed one of the earth’s most infertile soils into one of the most productive. These early conservationists disappeared 500 years ago, but centuries later, their soil is still rich in organic matter and nutrients. Now, scientists, environmental groups and policymakers forging the next world climate agreement see biochar not only as an important tool for replenishing soils, but as a powerful tool for combating global warming.