Biochar Is a Very Good Fertilizer

Biachar is a fertilizing technique which was widely adopted by tribes in the amazon. If it's deployed across the world on an industrial cale, it could save 16% of our greenhouse gas omissions. It can also help prevent forest fires and even generate electricity. We look at two californian promoters who are hoping to make big profits from selling lots of bio char. And we go into seven copses wood near the village of whittlebury in northamptonshire.