Zombies stalked San Francisco streets on Thursday as social game maker Zynga ghoulishly introduced a game that lets iPhone or iPod Touch users slash and hack the undead.

Actors posing as the living dead were unleashed here and in Manhattan ahead of the "Zombie Swipeout" launch. The hordes enticed humans with free "blood pops" -- hibiscus and mint popsicles promising the "fleshiest" ingredients.

The Swiss sun-powered aircraft Solar Impulse landed safely in Madrid early Friday at the end of the first leg of its attempt at an intercontinental flight without using a drop of fuel.

Pilot Andre Borschberg successfully had launched the plane from an airfield in Payerne in western Switzerland at around 8:30am (0630 GMT) Thursday, bound for Rabat via Madrid, after a two-hour delay due to foggy conditions.

Yahoo! on Wednesday set out to reclaim the Internet search crown from Google with the release of software that transforms the way users explore the Web using Apple's coveted gadgets.

A Yahoo! Axis application was introduced for iPhones, iPads, and iPod Touch devices and also as "plug-in" software for Chrome, Internet Explorer, Firefox and other Web browsers featuring HTML-5 graphics capabilities.

Google won a major victory Wednesday as jurors sided with the Internet giant in a high-stakes court battle over patents with business software titan Oracle.

In a unanimous decision, 10 jurors agreed that Oracle had failed to prove its claims that Google infringed on Java software patents in Android operating software for smartphones and tablet computers.

Google has completed its $12.5 billion purchase of device maker Motorola Mobility in a deal that poses new challenges for the Internet's most powerful company as it tries to shape the future of mobile computing.

The deal closed Tuesday, nine months after Google Inc. made a surprise announcement that it wanted to expand into the hardware business with the most expensive and riskiest acquisition in its 14-year history. The purchase pushes Google deeper into the cellphone business, a market it entered four years ago with the debut of its Android software, now the chief challenger to Apple Inc.'s iPhones.

Regulators are examining whether Morgan Stanley, the investment bank that shepherded Facebook through its highly publicized stock offering last week, selectively informed clients of an analyst's negative report about the company before the stock started trading.

Rick Ketchum, the head of the Financial Industry Regulatory Authority, the self-policing body for the securities industry, said Tuesday that the question is "a matter of regulatory concern" for his organization and the Securities and Exchange Commission.

Nintendo's Shigeru Miyamoto, creator of Super Mario Bros, Donkey Kong and other hit video games, on Wednesday won Spain's prestigious Prince of Asturias Prize.

The jury praised the 59-year-old Japanese game designer for turning video games into "a medium capable of bringing people together regardless of sex, age or social or cultural status."

Cyber criminals are cranking out new weapons at a brisk pace, tailoring malicious software for a spectrum of gadgets including smartphones, tablets, and Macintosh computers, a security firm said.

A "threats report" released late Monday by McAfee showed that the number of new pieces of malicious code, or "malware," targeting Windows machines in the first three months of this year was the highest in four years.

YouTube celebrated its seventh birthday by saying it has hit fresh milestones in terms of its offerings and the amount of time spent on the video-sharing website.

"Today 72 hours of video are uploaded to the site every minute," the Google-owned website said in a blog post Sunday.

Microsoft's upcoming Windows 8 series -- featuring an upgraded cloud computing service -- marks a "rebirth" of its operating systems, chief executive Steve Ballmer said Tuesday.

Ballmer described Windows 8 as the "deepest, broadest and most impactful" Windows software ever created by the U.S. tech giant, after the current Windows 7 sold at unprecedented rates to businesses.