It might add an hour or more on to your flight time, and make flights more expensive (labor hours), but it will stop climate change, say experts: Slower aeroplanes ‘could cut fuel waste’ (archive.is)
Also, we should:
- End contrails
- Make jets 50% more fuel efficient (by magic!)
- “Sustainable Aviation Fuels”
- Launch “moonshot” technology demos
Flying Into the Future: Cambridge Charts Path to Zero Emissions in Aviation (scitechdaily.com)
It’d be nice of Boeing could just make a jet that doesn’t lose doors in flight, have batteries catch fire, and with control systems that do not crash planes.