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The high-tech system can essentially override human error and slow a train that is going too fast. Congress mandated that all trains have it by 2015, but only a few passenger and freight railroads will be ready by then. And after a deadly train crash in New York, few in Congress may be willing to vote for a delay.

For the uninitiated, a "Chinese fire drill" can be described as a form of vehicular musical chairs. Where did that name come from?

When Congress voted to end the shutdown, the measure also included $2 billion for a troubled lock and dam project on the Ohio River. Senate Republican leader Mitch McConnell, a supporter of the project, has been attacked by hard-line conservatives who call it pork-barrel spending, but he says he didn't put it in the bill.

The program is part of a national push for science education among minorities. A U.S. Department of Commerce study found that blacks and Latinos are half as likely as whites to have a job in science or engineering.

From dramatic farewells to stomach-turning testimony to a would-be witness who turned up dead, the trial of Boston gangster James "Whitey" Bulger was something else. The mobster was convicted of 11 murders and multiple counts of extortion and money laundering

Mark "Coon Rippy" Brown, of Gallatin, Tenn., became an Internet sensation for posting videos online of himself bantering, dancing, even showering with his pet raccoons. He's now using his Internet fame to garner support, in an effort to get his pet raccoon Rebekah back from the Tennessee Wildlife Resources Agency, which recently seized the critter. It is illegal in Tennessee to possess native animals captured in the wild.

It's not the hard work that will make astronauts lose it on long planetary missions — it's boredom. And something that can become very boring very fast is a rote menu. A simulated Mars mission reveals why cooking for others will be vital on long space journeys, and why wraps rule.

Online streaming services are legal, but they rarely generate enough royalties to sustain a musician's livelihood. What's an ethical music fan to do?

They're out of the lab now, flying through the air, crawling in the grass, buzzing near you, swimming in the ocean. They're robots. They're among us. We don't notice yet. But we will.

The 2013 America's Cup isn't just about speed demons racing faster than the wind. These days, the 162-year-old international sailing competition is being powered by supercomputers. Tech teams are crunching the numbers to make small changes that mean a big difference in speed.