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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.
Doubling the efficiency of solar devices would completely change the economics of renewable energy. Here is a design that just might make it possible.
A flooded carbon market could help make the case for carbon taxation in the United States.
Vast amounts of the clean-burning fossil fuel have been discovered in shale deposits, setting off a gas rush. But how it will affect our energy use is still uncertain.
Companies are racing to develop ways to make the 100-meter blades needed to make offshore wind compete with fossil fuels.
Energy-hungry Japan extracts natural gas from deep-sea methane hydrates, but it’s not clear whether the “flammable ice” makes economic and environmental sense.
Every clean-tech startup these days claims to have a breakthrough that will finally make renewable and clean energy sources cheap enough to compete with fossil fuels. But are we really on the brink of a clean-energy economy?