Planet-healing coolant might prevent bad weather in 2075, but it also might catch fire right now and burn your face off while emitting "a chemical far more deadly to humans than hydrogen cyanide"

Public Safety Announcement: Ozone Friendly Coolant May Eat Your Face Off | Tallbloke's Talkshop

“This new chemical helps fight climate change and ozone depletion,” McCarthy said of HFO-1234yf in 2011 while serving as administrator of the EPA’s Air and Radiation office. “It is homegrown innovative solutions like this that save lives and strengthen our economy.”

Is any of that true, though? Last August at Mercedes-Benz’ test track in Sindelfingen, Germany, engineers simulated a crash in which the refrigerant was sprayed onto the car’s hot engine.

The result?

The substance burst into flames as soon as it made contact.

Not only that, as it burned it emitted hydrogen fluoride, “a chemical far more deadly to humans than hydrogen cyanide, emitted in such amounts that it turned the windshield white as it began to eat into the glass.”