Michael Copeland & Susanna Hamner:

The result is this list of 20 tantalizing business ideas, ranging from a host of new websites and applications to next-generation power sources and a luxury housing development. This isn’t small-time thinking, either: These investors -which include some of Silicon Valley’s most successful VCs as well as serial entrepreneurs like Steve Case and Howard Schultz are backing their ideas with a collective $100 million in funding to the entrepreneurs who can get them off the ground.