This Web-only article is a special rich-media presentation of the feature, "12 Events That Will Change Everything," which appears in the June 2010 issue of Scientific American. The presentation was created by Zemi Media. Find all our other interactive offerings here.
May 21, 2010 | 65
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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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