Discussion: Global Warming, Emission Standards, and Other Environmental Issues - Part 1

You can’t criticize America! We’re the city on the hill! You’ll ruin our economy! Ruin someone else’s!
 


It's okay he and the other wealthy people will live on their space colonies while we die on our dying planet.
 


It's okay he and the other wealthy people will live on their space colonies while we die on our dying planet.

Twitter dude is misrepresenting (or misunderstanding) his own source. The fine-print text says that about a billion low-polluting individuals produce less carbon waste per person over a lifetime than a single passenger on a single space flight. Granted, that’s a sobering comparison. But his “headline” suggests that a billion people in total produce less carbon waste than one astronaut. And that’s way wrong. Indeed, dude is exaggerating (if I have my math terms correct) by nine orders of magnitude. Also: Elon Musk might have been a better choice for billionaire villain. :word: His Falcon rockets use relatively dirty kerosene-based fuel. Whereas, Bezos’s (sub-orbital) Blue Origins rockets use relatively clean hydrogen/methane-based fuel.

To be sure, space missions — generally and on a per flight basis — create more pollution than commercial airliners. But there are vastly more airline flights than space flights. One estimate says that all rocket launches in one year account for about 0.0000059% of all CO2 emissions. For airliners, it’s about 2.4%. And combined cars, trucks, etc. are even worse offenders. So if you’re prioritizing pollution targets, banning (say) two-stroke lawnmowers would have a greater impact than banning space travel.
 

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