How biochar removes CO2 from the air -- and helps farmers thrive | Axel Reinaud TED Talks Science and Medicine

Biochar is a kind of charcoal that removes CO2 from the atmosphere, helping yield healthy crops and even producing abundant renewable energy in the form of electricity as it's made. This exciting climate change fighter is ready for scaling now. Entrepreneur Axel Reinaud outlines three ways to make this material more accessible to farmers -- so that our food system, energy grid and the climate can all reap the benefits.