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Most of the proceeds from the Regional Greenhouse Gas Initiative have gone to programs that aim to cut energy demand, foster the growth of alternative energy, and help the poor pay energy bills.
Clean-energy industry professionals say that state-level efforts to encourage green technology and efficiency are more important in the wake of national elections.
Carbon trading in U.S. begins, a hydrogen car reality check, range of solar technologies dominate this quarter's VC investments, Dell's LED screen make laptops greener, stolen solar panels a growing problem.
RGGI will be the first carbon-trading market in the U.S. when it goes online in September. But it's not just policy wonks who will be watching.
Stopping short of specific proposals, Bush sets a national goal of halting greenhouse gas growth and called on other nations to do the same.
Environmental issues and carbon regulations top the list of what worries boards at energy utilities, as awareness of climate change grows.
Services are sprouting up to lower a person's carbon "footprint," as businesses appeal to consumers concerned about climate change.
The case, set for Wednesday, arises from growing pressure in the U.S. to regulate the greenhouse gas carbon dioxide.