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In her new book, Breasts: A Natural and Unnatural History, Florence Williams offers her take on why breasts are getting bigger and developing earlier, why tumors seem to gravitate toward the breast, and how toxins from the environment may be affecting hormones and breast development.

The Gulf countries are providing weapons and the U.S. is helping build the rebels' command and control infrastructure.

U.S. Senate candidate Elizabeth Warren's claims of Native American heritage seem uneasy to swallow. But why? What does it take to be considered an ethnic minority, and what does the controversy say about the way we judge ethnic backgrounds?

Skechers has agreed to pay $40 million to settle claims that it deceived its customers by saying its Shape-ups shoes would help people who wore them shed pounds and tone their abs, buttocks and legs, the Federal Trade Commission said.

Now the fastest growing voting group, Latinos have never been so heavily courted in a presidential race. They could play a key role in battleground states in the 2012 elections.

Wisconsin Democrats hope to unseat Republican Governor Scott Walker in a recall election. In the Los Angeles Times, Jonathan Zimmerman, a lifelong Democrat, says he is "appalled." The recall, he writes, "epitomizes the petty, loser-take-all vindictiveness of contemporary American politics."

Truvada is a pill that's already used to treat people with HIV. A daily dose can also significantly reduce the risk of new infection. And a panel recommended the FDA approve an over-the-counter HIV test, OraQuick. Users could test and interpret their results at home in as little as 20 minutes.

The coalition of opposition groups is disarray as the violence in the country continues.

President Obama has said "all options are on the table." The U.S. ambassador to Israel said this week that military options are ready, if necessary, but that diplomacy is still the preferred solution.

We may romanticize that strawberries are grown down the road, but most of them come from California. And a complex web of plant cloning practices, relocation and fumigation has cropped up to keep it that way. Although scientists are exploring new options, like soil-free growing.