In a few years, when people ask, "What's on the tube tonight?" they might be making an unintentional pun. That's because researchers have created a new transistor based on carbon nanotubes that could soon light up televisions and other screens. Full story
In this video walkthrough, msnbc.com's Wilson Rothman shows you what's great — and what's not — about Barnes & Noble's new full-color LCD e-reader tablet.