Four Scientific American editors comment on President Barack Obama's 2011 State of the Union address. His speech touched on topics like technology, green energy sources, health care and innovation.
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
Save 66% off the cover price and get a free gift!
Learn More >>X