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3. Lemm Technologies
Purdue University

Takes the prick out of diabetes testing with a laser technology to monitor blood sugar. The device would be similar to the commonly used pulse oximeter, but instead of taking a laser reading through the skin, it measures sideways through a nail to test glucose levels.

By David A. Kaplan and Anne VanderMey @FortuneMagazine - Last updated May 17 2012: 5:23 AM ET
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Industrial ghost town? No, startup boomtown.

In the next 10 years, more than a billion square feet of urban industrial space will be vacant. Already, small businesses are laying claim to the post-industrial lots, often at a bargain.