A Washington man talking on his cellphone may be taking a health risk, according to an analysis from the World Health Organization that finds a possible risk of cancer from exposure to the devices. Nicholas Kamm/AFP/Getty Images hide caption

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Nicholas Kamm/AFP/Getty Images

Cellphone Use May Be A Cancer Risk After All

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A student works on her robot gladiator. Courtesy of National Tooling and Machining Association hide caption

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Courtesy of National Tooling and Machining Association

Robot Wars Prepare Kids For Manufacturing Jobs

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David Jackson (left) and Dave Petrillo of Coffee Joulies brought in more than $300,000 using Kickstarter.com. Paul Agus/Courtesy of Coffee Joulies hide caption

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Paul Agus/Courtesy of Coffee Joulies

Arts-Funding Site Gets 'Kickstart' From Business Bids

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A portrait of David Quiring Sr. This is the first image that appears when you scan the QR code at his grave. See his QR website. Courtesy of Quiring Monuments hide caption

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Courtesy of Quiring Monuments

Technology Brings Digital Memories To Grave Sites

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IPhone Application Brings National Mall To Life

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President Obama, with Facebook CEO Mark Zuckerberg, speaks during a town hall meeting April 20 at Facebook headquarters in Palo Alto, Calif. Mandel Ngan/AFP/Getty Images hide caption

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Mandel Ngan/AFP/Getty Images

Facebook Has Powerful Friends; Will Users Suffer?

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The Splinter Bike, built by carpenter Michael Thompson. Courtesy Michael Thompson hide caption

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Courtesy Michael Thompson

Wooden Bike Settles A Bet With A Splinter

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Study May Shed Light On How To Stop Spam

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LinkedIn CEO Jeff Weiner, center right with beard, and Reid Hoffman, center background with glasses, listen to traders during their company's listing on May 19 on the New York Stock Exchange. The company reached a market value of $9 billion last week, leading to fears of another dot-com bubble. Mark Lennihan/AP hide caption

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Mark Lennihan/AP

In LinkedIn IPO, Hints Of Another Tech Bubble?

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What Are Bitcoins?

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Humorist's Spider Crawls The Web, Bringing Fame And A Book Deal

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A recent view of Earth from the International Space Station. NASA hide caption

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NASA

Aboard The Space Station, It's A Beautiful World

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Re-evaluating The Fukushima Nuclear Situation

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