Stories by Sharon Gaudin

Facebook may continue to gain users, but the world's biggest social network isn't gaining them as quickly as it has been and is actually losing users in the U.S.

Facebook said it's working with European Union regulators to resolve criticism about its new facial recognition feature, but trouble may also be brewing for the social network here in the U.S.

Facebook's move to enable facial recognition across its entire social networking site is raising some eyebrows - and possibly some legal woes -- over its privacy implications.

With World IPV6 Day in full swing, the test flight of the Internet's new communications protocol is going smoothly.

After helping to hatch the plan for World IPv6 Day set for Wednesday, a senior network engineer at Facebook is raring to test the site's reworked network.

When Google announced that hackers had gone after Gmail users, the company noted that they specifically targeted U.S. government officials and military personnel.

The number of U.S. Twitter users jumped in the past year, increasing more than 50 per cent, according to a study from the Pew Research Center.

After 19 years and 25 space flights, NASA's space shuttle Endeavour returned to Earth from a 16-day mission early this morning, ending its storied career.

Just as Google releases its +1 button to the Web, many industry watchers are scratching their heads after hearing former CEO Eric Schmidt admit that he missed the boat on social networking.

NASA astronauts Friday wrapped up the fourth and final spacewalk of space shuttle Endeavour's last mission, moving a robotic arm from the space shuttle to its new home onboard the International Space Station.

NASA astronauts prepared today for their fourth and final spacewalk during the space shuttle Endeavour's last mission to the International Space Station.

More than a year after losing communication with the Mars rover Spirit, NASA is making one final attempt today to contact the robotic traveler.

It's official. Twitter last night finalized a deal to buy TweetDeck, ending weeks of speculation.

NASA announced Tuesday its plan to build a spacecraft that will fly astronauts into deep space, going as far as near asteroids and even Mars.

Amazon.com came up with a good marketing idea in its battle against Apple's iTunes, but it worked almost too well as execs vastly underestimated the sheer might of Lady Gaga fans.