The pledge was made to help poorer nations to cope with the effects of climate change. But one fundraising idea -- taxing air travel and shipping -- may be challenging to implement.

From individuals to cities, people are trying to "green" themselves on their own, instead of waiting for legislation. Marketplace's Adriene Hill reports.

The White House announced that it'll ban new drilling in the mid- and southern Atlantic coast and the west coast of Florida. Marketplace's Sarah Gardener reports.

While the U.N. summit in Cancun undertakes big environmental initiatives, some small businesses are already taking up the green cause. What they're discovering is that beyond the environmental factors, going green is helping out their bottom line, too.