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Comment Re:Ok... (Score 1) 180

Or, if you want to get really crazy sci-fi, a kind of jet-powered "superbus" made out of lightweight materials like composites and aluminum, that travels above the roads and doesn't require any infrastructure between the start and end points at all! It could go much faster and could travel in direct routes, disregarding terrain altogether. Maybe someday...

Comment Re:My take on this... (Score 1) 176

Well...CO2 is not really "dirty" as far as plants and animals are concerned, at least, not at anything remotely like atmospheric levels. If global warming is in fact not as big a concern as believed, then reducing atmospheric CO2 has at best almost no beneficial impact on air quality, and in fact to the extent that CO2 mitigation takes priority to other air quality priorities, like sulfur and nitrogen oxides, it actually decreases air quality.

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