The spread of nuclear weapons and ballistic missiles raises fears of atomic attacks on the global satellite system
DNA is more than just the secret of life--it is also a versatile component for making nanoscopic structures and devices
An emerging class of pillbox-size computers, outfitted with sensors and linked together by radios, can form perceptive networks able to monitor a factory, a store--even an ecosystem. Such devices will more intimately connect the cyberworld to the real world
What hurdles stand between the promise of human stem cell therapies and real treatments in the clinic?
After a seven-year journey, the Cassini-Huygens spacecraft is preparing to unveil the mysteries of Saturn, its rings and its giant moon, Titan
Bringing the top predator back to Yellowstone has triggered a cascade of unanticipated changes in the park's ecosystem
Deadline: Jun 30 2013
Reward: $1,000,000 USD
This is a Reduction-to-Practice Challenge that requires written documentation and&
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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