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If you want to change society-or are interested in aiding or evaluating the efforts of others to do so-some understanding of exactly how environmental circumstances affect such efforts could be extremely helpful.
The Fermi Paradox: There should be 100,000 intelligent alien civilizations in our galaxy - so why haven't we found any of them?
A multigenerational journey between stars would require a lot more passengers than scientists previously thought.
As the world economy crashes against debt and resource limits, more and more countries are responding by attempting to salvage what are actually their most expendable features-corrupt, insolvent banks and bloated militaries-while leaving the majority of their people to languish in "austerity." The result, predictably, is a global uprising. This current set of conditions and responses will lead, sooner or later, to social as well as economic upheaval-and a collapse of the support infrastructure on which billions depend for their very survival.