Fifty years ago, the typical first-time mother in the U.S. took about four hours to give birth. These days, women labor about 6 1/2 hours. Carsten/Three Lions/Getty Images hide caption

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Protesters chant and hold a copy of the Declaration of Independence and the Constitution in front of Supreme Court in Washington as the court concluded three days of hearing arguments on the constitutionality of President Barack Obama's health care overhaul. Carolyn Kaster/AP hide caption

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Supporters of the health care law have recently embraced the term "Obamacare," a word they once recoiled from. Charles Dharapak/AP hide caption

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Environmental groups say a ban would protect consumers from the health effects of BPA that leaches from products including some soup cans. Chip Somodevilla/Getty Images hide caption

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A package of K2, a concoction of dried herbs sprayed with chemicals sometimes called synthetic marijuana. New York moved to ban a wide range of products like these this week. Kelley McCall/AP hide caption

itoggle caption Kelley McCall/AP