The chemicals, called hydrofluorocarbons (HFCs), were introduced widely in the 1990s to replace ozone-depleting gases used in air conditioners, refrigerators and insulating foam.
They worked: The earth’s protective shield seems to be recovering.
But researchers say what’s good for ozone is bad for climate change. In the atmosphere, these replacement chemicals act like “super” greenhouse gases, with a heat-trapping power that can be 4,470 times that of carbon dioxide.
Now, scientists say, the world must find replacements for the replacements — or these super-emissions could cancel out other efforts to stop global warming.
“Whatever targets you thought you were going to make,” said David Fahey, a physicist at the National Oceanic and Atmospheric Administration, “it will be undermined by the fact that you have . . . additional emissions that you hadn’t planned on.”
…and they are wrong now. Enviro-nuts! Just stop. Stop claiming you know what you’re doing, you don’t have a clue.
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