Watch: Mysteries of the Northern Lights
David Muir gives a little insight into what creates those amazing auroras.

TouchPal Keyboard Tablet tops Android Apps of the Week (Appolicious)
Appolicious - The touchscreen keyboard gets an upgrade with TouchPal’s Keyboard for Android tablets. It lets you easily switch between swiping and tapping, as well as gestures to get the most out of your finger follies. This week also brought some big name updates to the Android Market, including special upgrades from McAfee Security and Mint’s personal finance app. Salesforce debuted its Rypple app this week, as did Eventbrite for managing events on-the-go.

18-Mile Crack Seen in Antarctic Glacier
Antarctica is so vast that the pictures give you no sense of scale. The pencil-thin line across the satellite image of Pine Island Glacier (above) is actually more than 18 miles long, 800 feet across in places, and 180 feet deep. And it’s growing. In...

Watch: Facebook and the Unfriend Finder
Free software lets users know which people ditched them on Facebook.

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Group seeks to save data on Megaupload servers (Reuters)
Reuters - The Electronic Frontier Foundation on Thursday asked federal prosecutors and lawyers for the Megaupload.com file-sharing service to allow users who uploaded material to retrieve it as long as it was not copyrighted material.