Featured in challenges

Why Unwinnable Games Are Massively Popular
7 DARPA Challenges We Want To See Next
Enter the Popular Science/InnoCentive Air Pollution Challenge From the U.S. Government
PopSci Innovation Challenge: Tracking Electronic Waste
MIT Scientist Offers $100,000 to Anyone Who Can Prove Quantum Computing Is Impossible
2011 Visualization Challenge Winners Teach Science Through Art
Introducing the Popular Science/InnoCentive Education Challenge
Obama Wants To Know What 21st Century Technological Challenges You’d Like Tackled First
Grand Engineering Challenges for the 21st Century
The Car That Drives Itself