CHICAGO (AP) — A 2-year-old girl born without a windpipe now has a new one grown from her own stem cells, the youngest patient in the world to benefit from the experimental treatment.

By Kate Kelland LONDON (Reuters) - The new strain of bird flu that has killed 17 people in China has been circulating widely "under the radar" and has acquired significant genetic diversity that makes it more of a threat, scientists said on Friday. Dutch and Chinese researchers who analyzed genetic data from seven samples of the new H7N9 strain say it has already acquired similar levels of genetic diversity as much larger outbreaks of other H7 strains of flu seen previously in birds. ...

I find it fairly scary there are people using a dating site to find a lover who showers once a month, eats garbage, likes tortured animals and finds the threat of nuclear war exciting. These are just some of the answers to user-generated questions asked by OKCupid, a dating site and app with 5 million monthly users.

The old, neglected lab of Nikola Tesla, arguably the closest real-world example of the archetype of the brilliant but eccentric scientist, has been purchased by a non-profit group, with the aim turning it into a museum and science learning center.

The U.S. military launched an experimental hypersonic aircraft on its swan song test flight Wednesday (May 1), accelerating the craft to more than five times the speed of sound in the longest-ever mission for a vehicle of its kind.

HOUSTON — They say that everything is bigger in Texas and that certainly goes for Space Center Houston's newly-announced space shuttle exhibit.

NEW YORK — Being a scientist is a noble profession, but it has its darker side. From fierce competition to plagiarism to outright scientific fraud, scientists are far from immune to the sordid.

By Deborah Zabarenko WASHINGTON (Reuters) - Nine years after he placed the first telephone call, Alexander Graham Bell tried another experiment: he recorded his voice on a wax-covered cardboard disc on April 15, 1885, and gave it an audio signature: "Hear my voice - Alexander Graham Bell." The flimsy disc was silent for 128 years as part of the Smithsonian Museum's collection of early recorded sound, until digital imaging, computer science, a hand-written transcript and a bit of archival detective work confirmed it as the only known recording of Bell's voice. ...

By Li-mei Hoang LONDON (Reuters) - Machines with the ability to attack targets without any human intervention must be banned before they are developed for use on the battlefield, campaigners against "killer robots" urged on Tuesday. The weapons, which could be ready for use within the next 20 years, would breach a moral and ethical boundary that should never be crossed, said Nobel Laureate Jody Williams, of the "Campaign To Stop Killer Robots". ...

By Laila Kearney SAN FRANCISCO (Reuters) - A solar-powered airplane that developers hope to eventually pilot around the world took off early on Friday from San Francisco Bay on the first leg of an attempt to fly across the United States with no fuel but the sun's energy. The plane, dubbed the Solar Impulse, departed shortly after 6 a.m. local time from Moffett Field, a joint civil-military airport near the south end of San Francisco, heading first to Phoenix on a slow-speed flight expected to take 15 to 20 hours. ...

By Ben Hirschler LONDON (Reuters) - Is nanomedicine the next big thing? A growing number of top drug companies seem to think so. The ability to encapsulate potent drugs in tiny particles measuring billionths of a meter in diameter is opening up new options for super-accurate drug delivery, increasing precision hits at the site of disease with, hopefully, fewer side effects. ...

By Irene Klotz (Reuters) - A six-passenger spaceship owned by an offshoot of Virgin Group fired its rocket engine in flight for the first time on Monday, a key step toward the start of commercial service in about a year, Virgin owner Richard Branson said. The powered test flight over California's Mojave Desert lasted 16 seconds and broke the sound barrier. "It was stunning," Branson told Reuters. "You could see it very, very clearly. Putting the rocket and the spaceship together and seeing it perform safely, it was a critical day. ...

Smartphones are getting smarter all the time, but the people using them aren't necessarily doing so. Today, we have devices at our disposal that snap photos faster than you can blink, surf the Web at speeds that make your home broadband jealous and download apps that can do everything and anything. So why are we so dumb sometimes when it comes to using these powerful pocket-size computers? If you do any of these 10 things with your smartphone on a regular basis, you probably don’t deserve to own one.

Android may be the most popular mobile platform on the planet, but it's not without flaws. Android phones and tablets frequently suffer from mediocre battery life, performance that slows down over time, embarrassing notification noises and and a host of other irritants. The good news is that, because Google's operating system is so flexible, there's a solution to just about any problem. These are the 12 worst Android annoyances and solutions for each.

After years of maintaining that BlackBerry was the only smartphone smart enough for the Department of Defense security blanket, the Pentagon has finally approved the Samsung Galaxy S IV, and sources tell The Wall Street Journal that Apple's iPhone is expected to follow some time later this month. The government has been ditching its BlackBerry-only policy for a while now, but winning over the Pentagon means these devices now have the sheen of security that was one of their main selling points.