Technology Top Stories from Associated Press (AP)

A California teenager has invented a device that fully charges a cell phone in 20 seconds flat, and leading technology firms, including Google, are turning interested eyes her way. Esha Khare, 18, of Saratoga, Calif., showcased her invention at the Intel International Science and Engineering Fair in Phoenix this past week.

Yahoo's board of directors approved an offer to buy the ailing Tumblr company for $1.1 billion in cash. Tumblr has yet to agree to the deal, various media reported. But the acquisition could be made official as early as Monday, the San Francisco Chronicle reported. Yahoo has scheduled a press conference in New York City, the location of Tumblr headquarters.

SEOUL, South Korea (AP) , South Korea is analyzing whether projectiles North Korea fired into its eastern waters over the weekend are short-range missiles or a new type of artillery the country may be developing, officials said Monday.

NEW YORK (AP) , Former Groupon CEO Andrew Mason is diving into several new ventures, including indulging his inner rock star with an album of "motivational business music." Mason said Thursday on his blog that he recently spent a week in Los Angeles and recorded a collection of seven songs called "Hardly Workin'."

NEW YORK (AP) , Yahoo CEO Marissa Mayer is promising to unveil "something special" Monday in New York as she tries to attract more traffic and advertising to the Internet company. The Sunnyvale, Calif., company gave no further details Friday other than that Mayer will be discussing a product. Reporters are being invited to attend the 5 p.m.

NEW YORK (AP) , It was supposed to be our IPO, the people's public offering. Facebook, the brainchild of a young CEO who sauntered into Wall Street meetings in a hoodie, was going to be bigger than Amazon, bigger than McDonald's, bigger than Coca-Cola. And it was all made possible by our friendships, photos and family ties.

LONDON (AP) , A clutch of Twitter accounts and a blog maintained by the Financial Times were hacked Friday, the latest in a series of cyberattacks claimed by the Syrian Electronic Army, a pro-government group which has regularly targeted media organizations it sees as sympathetic to the country's rebels.

WASHINGTON (AP) , The growing use of unmanned surveillance "eyes in the sky" aircraft raises a thicket of privacy concerns, but Congress is getting mixed advice on what, if anything, to do about it. A future with domestic drones may be inevitable.

HANOI, Vietnam (AP) , A Russian-financed search engine seeking to challenge Google's dominance in Vietnam is redirecting queries for some politically sensitive terms to the American company's search engine, apparently as a way of avoiding government anger or legal liability for sending surfers to sites containing criticism of the ruling party.

WASHINGTON (AP) , To the U.S. technology industry, there's a dramatic shortfall in the number of Americans skilled in computer programming and engineering that is hampering business. To unions and some...

NEW YORK (AP) , Major League Baseball hopes to expand video review by umpires for the 2014 season and says all calls other than balls and strikes could be subject to instant replay. Commissioner Bud Selig and MLB executive vice president Joe Torre say they still can't commit to expanded replay for next year. Torre hopes to have proposals by the August owners' meeting.

LONDON (AP) , Four young computer hackers who masterminded cyberattacks on targets from the CIA to Sony Pictures and Rupert Murdoch's News International were sentenced to up to 32 months in prison on Thursday. The hackers, who were affiliated with the group Lulz Security, had all pleaded guilty to hacking charges.

LONDON (AP) , U.K. lawmakers subjected search giant Google to blistering criticism Thursday, accusing the U.S. Internet company of playing games with Britain's tax rules to avoid paying what it owed. ...

CUPERTINO, Calif. (AP) , Apple says its customers have downloaded more than 50 billon applications from its App Store since its launch in 2008. Apple Inc. said Thursday that the 50 billionth download was a game called "Say the Same Thing" by Space Inch.

BEIRUT (AP) , Syrian rebels withdrew from a prison in the northern city of Aleppo Thursday after heavy fighting with government troops, an activist group said, as it more than doubled its tally of deaths from sectarian killings in a coastal city earlier this month.