As Facebook's chief operating officer, Sheryl Sandberg turned the 800 million-user site into a moneymaker. She is reportedly the second-richest self-made woman on earth, after Oprah Winfrey. Aside from being the most well-known woman in technology, Sandberg is also a mother and advocate for women and girls. In perhaps the most popular commencement address last graduation season, Sandberg defended female ambition and encouraged women to stay in challenging jobs that will draw them back into the workforce after building families.
When Jasvinder Sanghera turned 14, she knew her time had come: she would be sent off to India and married to a man she'd never met. She ran away instead and, in 1993, founded a group called Karma Nirvana, a UK charity devoted to helping victims of forced marriages and honor violence. The group says that in 2008, 2,500 girls—suspected victims of forced marriages—went missing from schools in the U.K., usually during vacation. This year, that figure is expected to double.
A 16-year-old middleweight, Claressa Shields is one of 24 women competing in the US Olympic Team Trials for a chance to be among the first female boxers in the Olympic Games. She sees boxing as her way out of poverty-stricken Flint, Mich. "My goal before boxing was to have 10 kids before I was 26," she says. "I wanted to have a big old family. But now my goal is to get this gold medal and be a world champion."