NEW YORK (AP) — He famously wears a hoodie, jeans and sneakers, and he was born the year Apple introduced the Macintosh. But Mark Zuckerberg is no boy-CEO.

Facebook's chief executive turned 28 on Monday, setting in motion the social network's biggest week ever. The company is expected to start selling stock to the public for the first time and begin trading on the Nasdaq Stock Market on Friday. The IPO could value Facebook at nearly $100 billion, making it worth more than such iconic companies as Disney, Ford and Kraft Foods.

Google's self-driven cars will soon be appearing on Nevada roads after the state's Department of Motor Vehicles approved on Monday the nation's first autonomous vehicle license.

The move came after officials rode along on drives on highways, in Carson City neighborhoods and along the famous Las Vegas Strip, the Nevada DMV said in a statement.

The Nevada legislature last year authorised self-driven cars for the state's roads, the first such law in the United States. That law went into effect on March 1.

NEW YORK (AP) — Facebook wants to help you share your organs.

Users in the United States and the U.K. can enroll as organ donors via links to official registries on the world's biggest social networking site, said CEO Mark Zuckerberg. The links should make it easier for people who want to donate their organs to sign up.

Facebook users who are already organ donors can add that information to their profile page, now known as their timeline.

A new study suggests that the Athabasca Valles, a group of valleys near the Martian equator, were not formed by ice, as some scientists have theorized.

Instead, high-resolution images of the valleys reveal more than 250 coiling spiral patterns that closely resemble lava flows on the Big Island of Hawaii. And that means the valleys on Mars were probably formed by volcanic activity, said Andrew J. Ryan, the planetary scientist at Arizona State University who discovered the coils.

The Facebook-related firings have begun: A teacher’s aide in Michigan was let go from her job after a school administrator demanded that she turn over her Facebook password and she refused. The aide, Kimberly Hester, is preparing for a legal showdown with the school system.

The incident that prompted administrators to ask Hester for her password occurred last spring. According to  local news station WSBT, “She jokingly posted a picture of a co-worker’s pants around her ankles and a pair of shoes, with the caption ‘Thinking of you.’” Hester wasn’t using Facebook during school hours or at a school computer, but her brand of humor got her in hot water at work anyway.

Struggling BlackBerry maker Research in Motion Ltd. said Thursday that it will cede most consumer markets after failing to compete with flashier touch-screen phones such as Apple's iPhone and models that run Google's Android software, reports The Associated Press.

Instead, RIM said it will return to its roots and focus on business customers, many of whom prefer BlackBerrys for their security. RIM has had limited success trying to enter consumer markets in recent years, and RIM CEO, Thorsten Heins said a turnaround required "substantial change."

Nokia design chief Marko Ahtisaari is spending a third of his time on creating a tablet for the cellphone maker, which would stand out among hundreds of iPad challengers, he said in an interview with Finnish magazine Kauppalehti Optio.

"We are working on it," he was quoted as saying.

The latest patents dispute between some of the world’s best known companies is pitting Yahoo! against Facebook in a rare social media court battle.

Yahoo! filed a lawsuit in a California court on Monday night accusing Facebook of infringing 10 patents held by the internet pioneer.