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A risque campaign that aims to boost self-exams for breast cancer has reignited a debate about whether they prevent cancer deaths. One doctor says it's time to change how women look for lumps.

In nine months the human brain grows from a single cell to more than 80 billion. Mapping how genes are activated gives scientists clues to the origins of mental disorders like autism.

Tuna, swordfish and other migratory fishes are being overfished by vessels on the high seas. A new proposal says we should close these international waters for a few years to let the fishes rebound.

Here's the latest bit of evidence that exercise keeps the brain fit. Much of the research has been in older people, but this study found that being fit in your 20s makes you sharper in middle age.

The incumbent mayor of the nation's capital will not be re-elected. A federal investigation into Vincent Gray's 2010 campaign, along with allegations lodged just weeks before the election, helped propel his closest opponent to a surprise double-digit victory in the Democratic primary.

The IRS has not audited a church in five years. Some televangelists are taking advantage of that inaction to shield millions of dollars from public scrutiny.

Texans overwhelmingly choose cars and trucks for their commutes, but in cities like Houston, Dallas and San Antonio, policy leaders have incentives to support cycling. They say it's good for business.

The ousted Ukrainian president says Moscow's annexation of the Black Sea peninsula is "a major tragedy," and he hopes to persuade Russian President Vladimir Putin to return it.

Author Michael Lewis says high-frequency traders have figured out a way to game the system. Some of those traders say that while there are "bad actors," high-speed trading plays a legitimate role.

Colleagues steal Greek yogurt and half-eaten oranges, and bosses help themselves to their employees' frozen dinner. Yes, fridge theft is apparently rampant in offices all over the world.