[elihu]

Taxes work in some cases, but we do bans as well sometimes when it makes sense. That isn't authoritarianism; it's just regular governance. Or you could call it civilization.

In terms of climate change, there isn't really any budget of "safe" CO2 emissions left -- we've used it all up by largely ignoring the problem up until now.

The world can't realistically just stop using fossil fuels right now, because so much of our infrastructure depends on it. But we can stop wasting fuel on things we don't need. One of those things we don't need is the vast majority of air traffic that isn't transporting high-value time-critical cargo or getting people where they need to go to complete a specific job (and if it could have been done with a Skype call then no, it isn't a need).