Did it actually say it will DOUBLE the CO2 concentration?
Definitely past the point of no return. I guess us millennials WILL actually see the worst climate change outcomes WELL within our lifetimes...
School chemistry means it was a ~20 year old prediction 30 years ago, based on known oil deposits 50 years ago.
It would have been a hopeful prediction from today's perspective, as we would necessarily have stopped pumping and burning oil by now, but unfortunately we haven't.