Black Is the New Green: My new article for Conservation

Can burning scrap fight global warming, provide energy to the world's poor without killing millions with smoke, and boost their food supply by improving the soil--all at once? The mysterious "black earth" of the Amazon, created by its inhabitants 8,000 years ago, hints that all this might be possible. I take a look at the story of biochar in "Black is the New Green," appearing in the new issue of Conservation.