Methane matters

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The Feb. 14 article (“Study: Global Warming Methane Exceeds Government’s Estimates”) stating that human sources of methane are unlikely to contribute significantly to global warming fails to mention that as Arctic ice and permafrost continue to thaw, gigatons of methane are expected to be released into the air, which would dwarf the amount of methane produced by any human source.

Accelerated methane release due to temperature rise in polar regions has already started, and the prestigious scientific journal Nature has predicted that because over half the polar sea ice is now gone, sudden methane release is possible “at any time,” producing a catastrophic acceleration of climate change. I think it would paint a clearer picture of methane-related issues to include this relevant scientific finding.

SARAH FLANDERS
Squirrel Hill


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