A moratorium on coal-fired power plants is key to cutting carbon dioxide emissions that promote global warming, NASA's top climatologist said Monday."There should be a moratorium on building any more coal-fired power plants until the technology to capture and sequester the (carbon dioxide emissions) is available," said James Hansen, director of the NASA Goddard Institute for Space Studies.
"This is a hard proposition that no politician is willing to stand up and say it's necessary," he told journalists at the National Press Club.
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