Instant Index: Control-Alt-Delete Command Was a Mistake, Gates Says

VIDEO: Diane Sawyer reveals the top stories that have people buzzing this week.

From the unconventional and awe-inspiring to the hilarious and heartwarming, here's a look at some of the most interesting photos, videos and stories that have our newsroom talking today. What's capturing your attention, filling your inbox and cluttering your Facebook/Twitter feed? Tweet us the stories you're talking about using #InstantIndex or email us at and they could appear on World News.

Control-Alt-Delete Command Was a Mistake, Gates Says You probably used Control-Alt-Delete on your computer several times today. You may have used it to log on to your Microsoft computer or start the task manager. When Microsoft cofounder Bill Gates was asked today when such a clunky keystroke was engineered into those early computers, he had a pretty candid answer. "We could have had a single button but the guy who did the IBM keyboard design didn't want to give us a single button. And so we programmed a low level that you had to. … It was a mistake," he said. That IBM engineer says he came up with Control-Alt-Delete in all of five minutes.

Mehdi Taamallah/AFP/Getty Images

Scientists Say They've Created Real Light Saber Scientists at MIT and Harvard say they have created a real light saber. They're solid laser beams that look like light but work just like the ones in "Star Wars."

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