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There were 138 toothbrush-related patents filed this year in the U.S. Why so many new ideas? "Cleaning the teeth is actually a pretty complex problem, and I think that's why there's been so much invention around it," says the head of Colgate's global toothbrush division.

Go! Pop! Bang! is grounded in the Baltimore club sound — super-danceable, lots of bass and crazily fast rapping. Rye Rye's debut album was all set to be released in 2009, but then sweeping changes in her life got in the way.

What do you keep in your desk drawer at work? Financial Times columnist Lucy Kellaway recently investigated what was in her colleagues' desk drawers, and wrote a column about her findings. She talks to Renee Montagne about some of the items people have, and why they hold on to them.

For the first time in five years, the U.S. housing sector contributed to economic growth in 2012. The foreclosure crisis is evolving and working its way through the system, although there are still lingering concerns.

This year's literary heroines aren't defined by their desire to love or be loved — or even to be especially lovable. Writer and critic Parul Sehgal celebrates five sublimely stubborn women, frequently at odds with themselves and always at odds with their times.

There were 350,000 first-time claims for unemployment benefits last week. That's the lowest level since March 2008. But because of the Christmas holiday, some states had to do more estimating than usual.

Also: U.N. envoy calls for transitional government in Syria; former President George H.W. Bush remains hospitalized; and talks to avoid an East Coast port strike resume.

The presence of fast food joints on hospital campuses often conflicts with wellness efforts. Long-term leases have made it difficult for these facilities to kick the restaurants out. But some hospitals are managing to give burgers and fries the boot.

Children can easily become kinder and more helpful. And that behavior makes them more positive, more accepting and more popular with other children, a study of Canadian kids finds.

Accused by Republicans of running an agency that issued "job-killing regulations," Jackson has faced stiff political opposition in her four years at the Environmental Protection Agency.