Can you imagine a house powered not by sun, wind or coal, but by living algae?
你能想象一座房子不是由太阳能、风能或者煤而是由活的藻类供应能量吗？
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Putting a price on carbon dioxide, as the cap-and-trade bill that passed the House in June would do, would make coal more expensive to burn and gas relatively cheaper.
The first demand was easily met: the leaders of the House of Representatives and the Senate instructed their staff to convert the plant to run on natural gas, which burns more cleanly than coal.