LAS VEGAS, NV - JANUARY 08: SolarKindle Lighted Covers, the first solar book covers for Amazon Kindle e-readers by SolarFocus Technology Co. are displayed during a press event at The Venetian for the... more 
LAS VEGAS, NV - JANUARY 08: SolarKindle Lighted Covers, the first solar book covers for Amazon Kindle e-readers by SolarFocus Technology Co. are displayed during a press event at The Venetian for the 2012 International Consumer Electronics Show (CES) January 8, 2012 in Las Vegas, Nevada. The USD 17.99 covers can hold a charge for up to 50 hours of use and come with a built-in LED reading light. CES, the world's largest annual consumer technology trade show, runs from January 10-13 and is expected to feature 2,700 exhibitors showing off their latest products and services to about 140,000 attendees. (Photo by Ethan Miller/Getty Images) less 
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Getty Images | Photo By Ethan Miller / Getty Images
Sun, Jan 8, 2012 9:02 PM EST