A picture from the photo story "Keg Stand Queens," which explores the gender dynamics of undergraduate binge drinking. Amanda Berg/The Alexia Foundation for NPR hide caption

itoggle caption Amanda Berg/The Alexia Foundation for NPR

Infants used to be born at home to traditional midwives. Mónica Ortiz Uribe hide caption

itoggle caption Mónica Ortiz Uribe

Betty Daniel gets a routine yearly mammogram from mammography tech Stella Palmer at Mount Sinai Hospital in Chicago in 2012. Heather Charles/MCT/Landov hide caption

itoggle caption Heather Charles/MCT/Landov

Currently, you need a doctor's prescription to purchase emergency contraception, such as Plan B, if you are under 17. AP hide caption

itoggle caption AP

A mammographer prepares a screen-film mammography test for patient Alicia Maldonado at a hospital in Los Angeles. Damian Dovarganes/AP hide caption

itoggle caption Damian Dovarganes/AP

Human embryos under a microscope at an IVF clinic in La Jolla, Calif. Sandy Huffaker/Getty Images hide caption

itoggle caption Sandy Huffaker/Getty Images

Mitt Romney's comments on abortion have surprised those on both sides of the issue. Evan Vucci/AP hide caption

itoggle caption Evan Vucci/AP

A contractor designed the Squatty Potty to help his mother get closer to the squatting position on the john. Courtesy of Squatty Potty hide caption

itoggle caption Courtesy of Squatty Potty

Doreen Ramogola-Masire, an obstetrician-gynecologist in Botswana, hopes that a simple, quick screen for cervical cancer with vinegar will catch the disease early and save women's lives. Jason Beaubien/NPR hide caption

itoggle caption Jason Beaubien/NPR

Mammograms may pose a particular risk to women with genetic mutations that predispose them to breast cancer. Bill Branson/National Cancer Institute hide caption

itoggle caption Bill Branson/National Cancer Institute