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@sj_zero
> When it comes to climate comparisons, I think it isn't so simple as "trains use less fuel per passenger"

Agreed, and this is where the rubber meets the road. If you accept the greenhouse effect, and that the planet is warming, then it's worth investing in things that aren't financially efficient, as long as they reduce carbon emissions.

So the key question is, would a China-style fast train network in North America reduce carbon emissions?

(1/?)

@fgraver @AccordionBruce @tbaldauf