In his article 'Are environmentalists an endangered species?', Time contributor Stephan Faris argues the 2005 flooding of New Orleans:
marked the high-water mark of the environmental movement, the moment when it became clear that caring for nature was not altruistic, but ultimately selfish and self-protective.
Knot theory could help spacecraft navigate crowded solar systems
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It can be difficult to figure out how to move a spacecraft from one orbit
to another, but a trick from knot theory can help find spots where shifting
orbit...
4 hours ago
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