Terra- Preta (BioChar)
[tag]Terra-Preta[/tag] is Portuguese for [tag]dark earth[/tag] and it is what the Portuguese explorers named the extremely fertile soil they found in the amazon.
Fifteen hundred years ago, tribes people from the central [tag]Amazon[/tag] basin mixed their soil with [tag]charcoal[/tag] derived from animal bone and tree bark. Today, at the site of this charcoal deposit, scientists have [...]