We have the sources. Select a country you like and search. But the exact amount is irrelevant for the issue. The concept of paying forward to future generations of the countries dont need sources or exact figures. How can we limit our footprint. Im not saying dont live for money you dont have but we have to consider the possible consequences. Especially if the trend goes in wrong direction for decades.

Sure. Humanity will die, be extinct, new rules will apply. Aliens will be found. Wars will happen and new authorities established. Ignore the issues is recipe for disaster and that is something that we, as humanity is great at.

That last part was obviously not for you but for mr bad luck with the flue.
Ive had it ones. A week after my third shot. Might die of that in a few years so mybe it's time to borrow more money just because of that??