A massive ecological study that’s happening across the United States, and which is designed to track the impact of long-term changes like a warming climate, is deliberately releasing a highly potent and persistent greenhouse gas in national parks and forests.
The gas, sulfur hexafluoride, is “the most potent greenhouse gas known to date,” according to the Environmental Protection Agency. It’s 22,800 times more effective at trapping heat than carbon dioxide, and lasts in the atmosphere for thousands of years.
So far, this ecology study has released around 108 pounds of the gas, which has about the same impact as burning more than a million pounds of coal.
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