Fight or flight and the evolution of pain

Hard wired into the survival mechanisms of all animals is the perception of pain. Different stimuli, such as heat or cold, foul odors, chemicals or a blunt blow can trigger pain receptors in the body that, in the blink of ...

Yahoo mines recent acquisitions to boost revenue

Yahoo is leaning more heavily on its recent acquisitions of technology and talent to as CEO Marissa Mayer tries to attract more traffic and advertising to the Internet company's services.

Sun unleashes first X-class flare of 2014

The sun emitted a significant solar flare peaking at 1:32 p.m. EST on Jan.7, 2014. This is the first significant flare of 2014, and follows on the heels of mid-level flare earlier in the day. Each flare was centered over ...

NASA's SDO sees giant January sunspots

An enormous sunspot, labeled AR1944, slipped into view over the sun's left horizon late on Jan. 1, 2014. The sunspot steadily moved toward the right, along with the rotation of the sun, and now sits almost dead center, as ...

Obama to meet with lawmakers, intel leaders on NSA

President Barack Obama is inviting lawmakers and intelligence officials to the White House to discuss National Security Agency programs as Obama prepares to unveil what changes he's prepared to make to the programs.

'Ultra HD' takes center stage but skepticism remains

Television giants at the Consumer Electronics Show in Las Vegas are touting the wonders of ultra high-definition screens despite doubts by analysts that people will buy them.

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