Soil -- from dirt to lifeline: Fred Kirschenmann at TEDxManhattan
16:25
La regeneración de nuestras tierras: perspectiva de un productor | Gabe Brown | TEDxGrandForks
8:34
Stop treating our soil like dirt! | Karen Wynne | TEDxHuntsville
13:07
From sand to soil in 7 hours | Ole Morten Olesen | TEDxArendal
15:36
Building a Future with Farmers: Lindsey Lusher Shute at TEDxManhattan 2013
12:52
TEDxHilo - Josiah Hunt - Biochar and the Future of Farming
10:34
Biochar - the future of sustainable agriculture: Lauren Hale at TEDxUCR
12:18
Biochar -- Putting the carbon Genie back in the bottle: Rob Lerner at TEDxSanMiguelDeAllende (2013)
14:05