A Spacecraft Within A Spacecraft (link from NewSpace Watch) - Planetary Resources announces that each of their Arkyd 100 spacecraft will be able to deploy a CubeSat, and that they will hold a competition for one of them:
Planetary Resources is proud to support this community by providing a 1U Cubesat spot to the public – free of charge – through its Arkyd CubeSat Challenge. And, best of all, our online community – YOU – will help to select the winner! ... In the coming weeks, we will be announcing additional information
regarding the Challenge’s structure, requirements, and timeframe. Stay
tuned here for more details.
EuSPEC 2012 planning well underway… - Space Elevator Blog on the 2012 European Space Elevator Challenge
Citizens In Space - SpaceHack
2012 International Aerial Robotics Competition - This is being held in Grand Forks North Dakota (July 31-August 3) and Beijing China (August 7-9)
Russian tycoon kicks off physics prize with $27 million in awards - Cosmic Log
Life Technologies to Compete in $10 Million Archon Genomics X PRIZE - X PRIZE Foundation
Here's a prize-related Kickstarter project that successfully met its funding goal: Atlas: A Human-Powered Helicopter for a Historical First! - A helicopter, powered solely by the pilot, designed to achieve one of
the greatest challenges in aviation history: the Sikorsky Prize.