Washington's Exploding Manholes Explained?
Washington's Exploding Manholes Explained?,
March 27, 2013,
By Kim Krieger, SCIENCENOW,
Wired Science,

Drive around Washington, D.C., and the phrase “passing gas” takes on a whole new meaning. Researchers who mapped methane concentrations on the streets of the nation’s capital found natural gas leaks everywhere, at concentrations of up to 50 times the normal background levels, they reported here last week at a meeting of the American Physical Society. The leaking gas wastes resources, enhances ozone production, and exacerbates global warming — not to mention powering the city’s infamous exploding manholes.
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