MarkWhittington writes: An argument about class warfare has broken out over the notion of a commercial Mars colony. It started when Elon Musk, who is said to be planning to retire on the Red Planet, mused that World War III could ruin his plans to settle Mars by destroying the Earth or at least damaging civilization sufficiently that space exploration has to be put off indefinitely, Newsweek, taking up the theme of another sort of planetary disaster, accused Musk and other space-minded billionaires of plotting to abandon the planet to the ravages of global warming while they go to Mars to live the good life.
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