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Space.com has a thought-provoking article written by Dave Brody for Ad Astra Magazine about the practical and ethical aspects of terraforming other planets. Mars is currently the focus of most terraforming debates, but the author's conclusion is: 'What works is what takes the least work: [terraform] asteroid/comet resources in near Earth orbits... Humanity would get lots and lots of cheap, free-floating, scalable, designer settlements in interesting, useful orbits.' These would then become stepping stones to other planets in our solar system and beyond.
http://slashdot.org
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