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Wind and solar get all the attention, but a key path to lowering emissions involves finding a less expensive way to do carbon capture.
A new type of fuel cell could make CO2 storage cheaper, but it could also prove to be a good way to pump more oil out of the ground.
A technology for generating electricity from coal without pollution achieves a milestone.
Using lime to scrub carbon dioxide from power plant smokestacks could cut emissions efficiently and cheaply.
Genetically engineered enzymes are the key to a new carbon-capture method.
Economists and utilities say the draft legislation could help avoid costly regulations.
Startup Porifera is developing membranes to separate greenhouse gases from smokestacks.
Despite subsidies and new projects, carbon dioxide sequestration is still a long way off.