Our Terms of Service and Privacy Policy have changed.

By continuing to use this site, you are agreeing to the new Privacy Policy and Terms of Service.

7 of 8
BACKNEXT
Biochar
Biochar
Currently farmers, foresters, and others that dispose of plants and trees usually leave them in the field to rot, or they burn them. Both those actions release carbon into the atmosphere.

How it works: This plan calls for farmers and the like to feed their waste into a machine that turns it into charcoal, seen here. The charcoal - or biochar - is then buried in the soil.

That would keep up to 40% of the carbon in the plant out of the atmosphere, and make the soil richer at the same time, said Jim Fournier, president of Biochar Engineering Corp.

Why it might not work: Questions remain over whether biochar could absorb enough carbon to make a difference in global warming.

NEXT: Hurricane-killing wave pump

Last updated December 02 2009: 10:52 AM ET
Email | Print | Share  |  RSS
 
google my aol my msn my yahoo! netvibes
Paste this link into your favorite RSS desktop reader
See all CNNMoney.com RSS FEEDS (close)
More Galleries
15 top-paid CEOs The 15 highest-paid corporate chiefs in America took home nearly $700 million last year -- about $47 million apiece on average. Expedia's Dara Khosrowshahi tops the list -- with $95 million in total pay. David Zaslav, who was no. 1 last year moves down to no. 15 this year. More
Driving Bentley's new SUV Spending an afternoon in Bentley's luxurious new $230,000 SUV. More
Best cars for the super-rich The Robb Report has selected these as the best new cars and SUVs for anyone who doesn't have to worry about how much they spend. More

Special Offer