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Scientists have set thresholds for nine key environmental processes that, if crossed, could threaten Earth's habitability. Ominously, three have already been exceeded.
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Autonomous Attack Drone Flies into History
The World's Lightest Material
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Why Barns Are Red - The Countdown #22
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sciammind #SciAmBlogs Wednesday - niche construction, cicadas, ageing, Moon, pirates' dodo, sick caecilians, hurricane f... http://t.co/sVtkJrmrg2
JenLucPiquant Packed house for @seanmcarroll's public lecture at UC Davis. And great Q's from engaged audience. #herocks
FlyingTrilobite .@pegspirate Please excuse me while I make some graven images, as is my trade. #popelovesatheists
Deadline: Jun 29 2013
Reward: $7,000 USD
The Seeker for this Challenge desires proposals for chemical methods that could rapidly degrade a dilute aqueous solution
Deadline: Jul 15 2013
Reward: $5,000 USD
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