On December 1, the crescent moon and the two brightest planets, Jupiter and Venus, converged in the evening sky. Under clear skies, the celestial triumvirate was plainly visible to the naked eye. In this view Venus, the brightest of the planets, is just above the treetops.
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
Deadline: Jun 30 2013
Reward: $1,000,000 USD
This is a Reduction-to-Practice Challenge that requires written documentation and&
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