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An experimental heat shield developed by NASA has survived a trip through Earth's atmosphere while travelling at hypersonic speeds up to 7,600 mph (12,231 kph).
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docfreeride Plus side of commencement: I leave so early no one expects me to prepare breakfast before I depart. When I return, however ... #LateLunch docfreeride Ah, commencement: the Saturday when I get to leave extra-early, to sit on a stadium-lawn in the sartorial equivalent of a solar panel.
sciam Early Land Animals Lacked Good Bites http://t.co/repD1Nc3Y9
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 30 2013
Reward: $100,000 USD
The Seeker desires a method for producing pseudoephedrine products in such a way that it will be extremely difficult for clandestine che
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