Methane Proves Hard to Capture

From Scientific American:

With drillers tapping into massive stores of natural gas across the United States, scientists are researching ways to capture it more effectively. Natural gas mostly consists of methane but has smaller amounts of carbon dioxide, hydrogen sulfide and nitrogen in the mix. Energy companies are looking for a cheap way to separate these gases to yield a pure methane stream. Developers also want to control methane leaks because the gas is an especially potent heat trapper in the atmosphere.

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