Oct 16, 2012 | 1
Israeli entrepreneurs say they're about to take the cycling world by storm with their new bicycle made of recycled cardboard. Each bike costs less than $10 to produce.
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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