The level of methane in the atmosphere has risen dramatically in the last decade—and climate scientists are worried. Although there’s still roughly 60 times less of it floating around than carbon dioxide, the gas heats the planet 86 times more intensely than CO₂ over a 20-year period, meaning that it accounts for about a quarter of human-caused global heating we’re experiencing today. And because it’s so potent in the short-term, fluctuations in its levels can have large and rapid impacts on how much global temperature rises in the next few decades.
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Source: Phys.org