Let’s Move for the $60,000 Apps for Healthy Kids competition. Create innovative, fun and engaging web- or mobile- based games and tools that encourage children directly or through their parents to make more nutritious food choices and be more physically active.

Current prosthetic legs are expensive and only last 3 to 4 years. To win this challenge you must create a complete design for high-performance legs that will last for at least 5 years and that can be built for less than USD$1,000.00 Users must be able to run and sprint comfortably as well to...

 The NYC BigApps Competition will reward the developers of the most useful, inventive, appealing, effective, and commercially viable applications for delivering information from the City of New York's NYC.gov Data Mine to interested users.

Would you like to make a contribution of historical proportions? Here's your chance. This challenge is to create technology that can literally help to reshape our world, liberate hundreds of millions of people from repression, and bring down evil regimes in the process. There are few...