What is Terra Preta? Hint: It's not just Biochar

In this video we'll look at what terra preta is, it's history and it's modern use; how it differs from Biochar and where they meet/ Just Have A Thinks Video : https://www.youtube.com/watch?v=aT2ji_tdHG0 Book Terra Preta: https://greystonebooks.com/products/terra-preta