Here’s the wild part: our hero R-12 is also a potent greenhouse gas. One pound of it traps 10,900 times more heat than a pound of CO2. So even though it’s not eating the ozone anymore (thanks, Montreal Protocol!), it’s still heating up the planet if it escapes. It’s like the villain that just can’t stop causing trouble.
But because R-12’s reign of terror has exposed this issue, scientists developed safer replacements, like HFCs (which are now also being phased out). The moral of the story? Humans are very good at making things cold, but hilariously bad at thinking about the consequences. So next time you enjoy a frosty air conditioner, give a silent toast to R-12—the chemical that taught us to ask, “Wait, what else is that stuff doing up there?”
And maybe hug your fridge a little tighter. It’s seen some things.
