Biochar Bob, https://www.youtube.com/user/BiocharBob
SeaChar's Estufa Finca project http://seachar.org/estufa-finca-project
Soil Reef Biochar https://www.soilreef.com/

Part 1

Part 2

Part 3

Part 4

Join Biochar Bob as he crisscrosses Costa Rica to learn how biochar adoption is creating a wave of social impact.