It’s condemned by the United Nations, the World Health Organization, UNICEF and other groups.It happens to an estimated 100 to 140 million people a year, including the West African nation of Mali, where 89 percent of girls and women experience it.A $1 million donation by Chris and Courtney Combe to Northwestern University School of Law aims to decrease that number.The money will be used to combat female genital mutilation, non-medical rituals that, for example, use a blade to pierce, slice or remove the clitoris …