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...
In climate science parlance it means it's a conservative guess and will likely happen faster than anticipated.
30 years ago I learnt in school in chemistry class that earths oil reserves will be used up in 30 years.
That was true back then though. It boils down to how oil "reserve" is defined, which is all about oil we know how to extract.
It didn't turn out to be true though. "True back then" seems like a weird way to phrase "wrong".
No, it wasn't wrong, because "oil reserves" are defined as: "quantities of crude oil and natural gas from known fields that can be profitably produced/recovered from an approved development", which means they change over time, when we find new oil or develop new technologies. And that's also what happened.