Leon Panetta, at a confirmation hearing for the post of Defense secretary, says the US will need to take 'both defensive ... as well as aggressive measures' to deal with the threat of cyberattack.

Anything can happen in politics, so you can’t say with surety that Newt Gingrich is toast. But for him to win the GOP nomination now would be quite a feat.

In a single Google doodle, the search engine somehow captured both of Les Paul's incredible contribution to modern music: The solid-body electric guitar, shown in the look and sound of today's Google logo; and multitrack recording, presented, in some degree, through Google's clever record feature.

This interactive Les Paul tribute caught the imagination of armchair guitarists across the country, no doubt derailing office productivity in the process. Since strumming with your mouse is a little imprecise, Google also allowed people to play through their keyboards. Once you click the record button, type any number key to pick at a corresponding string. The 1 key plays the lowest note, 0 strums the highest. Plus, if you hit several number (or letter) keys at a time, you'll play a chord.

YouTube has many excellent recordings from the Google guitar. Here are some of the best, in no particular order. The final page of this story will have some instructions on how you can play your own version. If you record a good session, share it with the world by posting the URL in our comments section.

AP - The entire top echelon of Newt Gingrich's presidential campaign resigned on Thursday, a stunning mass exodus that left his bid for the Republican nomination in tatters. But the former House speaker vowed defiantly to remain a candidate.

AP - Pursed lips. Frosty glares. Polite demurrals. Icy silence. Women in politics are grappling with the distinctly unfunny choice of restraining themselves or letting rip what they really think about Rep. Anthony Weiner's X-rated online conduct and whether he belongs in Congress.

AP - The Justice Department on Thursday reached a plea agreement in the leak case against a former National Security Agency official who allegedly passed classified documents to a newspaper reporter.