In Pictures: Google's most innovative projects

Google unveiled two new products at its I/O developer conference: the Nexus 7 tablet and Project Glass. Here's a look at how some of Google's other famous projects got their start.

9. Project Glass, 2014

Also at this year's I/O developer conference, Google revealed more details about Project Glass, which it first announced in April. Project Glass, an augmented reality head-mounted display that will be available to U.S. developers only, for now, for $1,500. It is slated to become available to the public in 2014.

The glasses resemble a pair of normal eyeglasses, but the lense is replaced by a heads-up display, which presents data without requiring you to look away from visual viewpoints

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