Narrow your search
Some companies are developing techniques for making charcoal as a way to store carbon underground, but a group of conservationist warn against large-scale use.
Cool Planet Biofuels, a start-up that converts plant waste into biofuel, scores $8 million in funding via GE joint partnership with North Bridge Venture Partners. GE gets a seat on the board.
New Zealand start-up invention makes biochar from captured carbon that can also be used as fuel.