You don't even have to be zero emissions. You just need net zero. If you're putting carbon into the air, you need to sink an equivalent amount of it. If you use biofuels for instance, so long as you replant/regrow the same biomass as you convert to fuel, you're closing the loop.

Zero emissions technologies are great where they're practical. Aircraft are one of those places where the energy density and overall density of your fuel source is very, very important.

Sure, but not high on the list of priorities. How about enabling people to get healthcare, go to college, or to survive by addressing global warming.

"Stop everything above this line on Maslow's pyramid because some people fall below the line" is not a solution to any of the problems faces by people below the line. It's like demanding that an astrophysicist cure AIDS at once before ever using another telescope.

You don't help people climb a ladder by chopping off the top and declaring the ladder climbed.

> You don't help people climb a ladder by chopping off the top and declaring the ladder climbed.

Sounds like public schooling in the USA for the last 25 years :(

If someone said those crazy, extreme things, that would be a relevant comment.

flying isn't a step on maslow's heirarchy of needs.