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Existing concepts in science like linear induction motors and magnetic levitation are back in the spotlight thanks to Elon Musk's proposal for a rail system that can travel faster than the speed of sound.

A bountiful blueberry crop this summer means lower prices. That's welcome news for consumers, but might spell trouble for blueberry farmers.

The Senate this week pushed through the nomination of Democrat Mel Watt to head the Federal Housing Finance Agency. The FHFA controls Fannie Mae and Freddie Mac. Watt replaces an official who was a thorn in the side of Democrats, and the move changes the landscape of housing finance reform.

One reason North Korean leader Kim Jong Un had his uncle executed, some analysts say, is that he felt disrespected. The uncle, Jang Song Thaek, allegedly failed to applaud with enough enthusiasm when Kim was given a key post. It's also thought that Kim wanted to send a message: Don't mess with me.

Much has been made of the need for young, healthy people to sign up if the Affordable Care Act is going to work. But it may be that the key word here is not young, but healthy. Insurance companies get paid more for older people, regardless of their health.

James Clapper, the director of national intelligence, listed "insider threats," alongside cyber attacks and terrorism. This marks the first time unauthorized disclosures are given such prominence in a threat assessment report.

After four decades on Capitol Hill, the California Democrat plans to step down at the end of the year. He leaves a deep legacy in health and environmental law, including clean-air rules and tobacco restrictions.

The world is at greater risk than ever from pandemics and biological weapons, health officials said Thursday. In response, the U.S. government is spearheading a global effort to build an early warning system for infectious diseases, drug-resistant microbes and possible bioterror agents.

At the Vancouver games, Canada won the most gold medals. Now fans are cheering on their teams in Russia: A moving, yelling, living, breathing mass of Canadian pride.

One year ago, Lauryn Williams had never tried bobsled racing at all; she was only elevated to the elite U.S. women's team 11 days ago. Wednesday, she made Olympic history.