The Secret to a Healthy Soil | Philippe van der Grinten | TEDxVenlo
22:05
Inspiring The World About Soil and Plant Health: Mick Alexander at TEDxRockhampton
19:50
Humus - the essential ingredient: Graeme Sait at TEDxNoosa
10:04
First, heal the soil | Allen Williams | TEDxBoston
11:20
The Power of Worms | Erich Fässler | TEDxHochschuleLuzern
9:39
Biochar: The Oldest New Thing You've Never Heard Of | Wae Nelson | TEDxOrlando
18:56
Soil - Not as boring as you think | Matthew Evans | TEDxHobart
12:49
My life started when they said it was over | Elin Kjos | TEDxKI
15:24