NASA: Dangerous greenhouse gas more common than previously thought.

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"NASA: Dangerous greenhouse gas more common than previously thought."

In an upcoming issue of the journal Geophysical Research Letters, NASA reports that “new research indicates a powerful greenhouse gas might be at least four times more prevalent than has been thought.” The level of nitrogen trifluoride — which “is thousands of times more effective at warming the Earth’s atmosphere than an equal mass of carbon dioxide” — has increased by a rate of 11 percent per year. Previously, “emissions of nitrogen trifluoride were thought to be so low the gas has not been considered a significant potential contributor to global warming.”

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