May 22, 2013 — Microsoft has designs on your living room. The software giant's new game console — Xbox One — uses speech-recognition technology and physical commands. Not just to control games, but also your TV, Skype and recorded video. Microsoft demonstrated the new device Tuesday.

May 22, 2013 — NASA and Google have come together to buy a new kind of computer that the manufacturer says runs on the strange laws of quantum mechanics. But some physicists counter that the machine, known as the D-Wave Two, has never demonstrated a phenomenon known as "quantum entanglement."

May 21, 2013 — Microsoft unveiled its new Xbox One Tuesday, displaying a device that takes new steps in game consoles' journey into becoming all-purpose entertainment and communication devices. The new console replaces the Xbox 360, which has been on the market for more than seven years.

May 21, 2013 — Architects have come up with spectacular concepts for vertical farms that would grow crops in city skyscrapers. But many horticulturists think the future of vertical farming isn't in skyscrapers, but rather in large, indoor warehouses lit up magenta by superefficient LEDs.

May 21, 2013 — Apple CEO Tim Cook faced tough questions on Capitol Hill on Tuesday. He defended a tax strategy that allows Apple to avoid taxes on tens of billions of dollars of profits. Cook also called on the Congress to lower the U.S. corporate tax rate.