Stories by Sharon Gaudin

Without mandatory signups, is Google+ adrift?

Now that Google has backed away from requiring new Gmail users to automatically sign up for Google+, analysts are wondering whether the company is giving up on its social network.

After harrowing 10-month trek, NASA's Maven orbits Mars

After 10 months and 442 million miles, NASA's Maven spacecraft has reached Mars and entered into its orbit.

SpaceX Dragon cargo craft heads to space station

Days after receiving a contract to build spacecraft that will ferry astronauts to the International Space Station, SpaceX launched its Dragon spacecraft, loaded with supplies and scientific experiments to the orbiting station.

Virginia Tech researchers devise traffic app to rival weather apps

Before many travelers head to the beach or up to the mountains to go apple picking or skiing, they check a weather app.

MIT's Cheetah robot is off its leash, running and jumping

Robots with legs should be able to go where wheeled robots cannot over obstacles and crevices.

Have a spare $9,000? Join Facebook for the rich

Want to talk about your Porsche, your takeover of a company or your new jet but uncomfortable doing it on Facebook?

SpaceX, Boeing may work together on US space flight program

SpaceX and Boeing Co. may share duties in a program aimed at launching NASA astronauts from American soil by 2017.

SpaceX wants to build cities on Mars

CEO and co-founder of SpaceX, Elon Musk, not only wants to send astronauts to Mars, he wants to build a city there.

Harvard team develops soft robot that stands up and walks on its own

Harvard University scientists have built a soft robot they say can function without a communications and power tether. The four-legged robot can literally stand up and walk away from the people who built it.

NASA's Catch-22: Russia may move astronaut training to Crimea

Russia is reportedly planning to move survival training for all Soyuz passengers to a Russian naval base in Sevastopol, Crimea, an area the Russian military grabbed from Ukraine earlier this year.

Stanford's ant-sized radios could connect the world

Scientists at Stanford University have built ant-sized radios that could one day help track patients' temperatures, turn on coffee makers in the morning and prevent forgery.

Don't blink! Facebook tries out disappearing posts

Facebook might be taking a page from Snapchat.

What you need to know about the Gmail password compromise

There's no need to panic about the nearly five million compromised Gmail passwords that appeared in a Russian Bitcoin security forum this week, according to Google.

Hackers compromised nearly 5M Gmail passwords

Security experts are urging Gmail users to change their passwords amid reports that hackers gained access to the credentials of 5 million users of the free email service. Some password combinations have been spotted on Russian cybercrime forums.

Internet Slowdown Day becomes an online picket protest

Have you noticed more spinning "loading" icons on Web pages today?