Direct sunlight and Amazon's Kindle have always gone hand in hand -- you simply can't read E-Ink without a strong light source. So, it would make sense to pair that lighting requirement with a solar panel, pack it into a convenient case, toss in a reading lamp and give readers the gift of effortlessly extended battery life -- which is exactly what SolarFocus intends to do. Scheduled to be shown off at this week's CES, the company's SolarKindle adds three months of unplugged use, in addition to fiv
