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

itoggle caption Carsten/Three Lions/Getty Images

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

itoggle caption Carolyn Kaster/AP

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

itoggle caption Charles Dharapak/AP

A patient is treated at the Nord Hospital in Marseille, France, in February. European countries have also been engaged in intense debates on the future of their health care systems, where universal coverage is the norm. Anne-Chrisine Poujoulat/AFP/Getty Images hide caption

itoggle caption Anne-Chrisine Poujoulat/AFP/Getty Images

Linda Dorr (left) and Keli Carender chant along with other demonstrators in front of the Supreme Court on Wednesday. John Rose/NPR hide caption

itoggle caption John Rose/NPR