Lewin Kogut
Lewin Kogut voted up Kalpa Perera's answer
A piston engined aircraft pollute the environment as same as a small car does. Aircraft's with jet turbo engines (turbo shaft, turbo prop, turbo jet) they do much less pollution compared to the amount of work it does. Both pollute the environment by burning fossil fuels. The total carbon emission by this aviation industry is … Read more
Lewin Kogut
Lewin Kogut voted up Tom Jackson's answer

The future is not yet.

The past gives you real, tangible information.

I'd love to know WTF some of my ancestors could possibly have been drinking.

(I meant to say "thinking," but that's probably why they did most of what they did.)