Sr. Helen Prejean journeys with prisoners sentenced to die and works to abolish capital punishment. A member of the Sisters of St. Joseph, her books include the bestselling "Dead Man Walking." Here are some articles about her from National Catholic Reporter and Global Sisters Report.

Sr. Dorothy Stang, a human rights and environmental advocate, was an American-born member of the Sisters of Notre Dame de Namur working in the Amazon rainforest in Brazil. Her work to support peasants and prevent deforestation led to threats from loggers and ranchers. She was assassinated Feb. 12, 2005. Here are several articles from National Catholic Reporter and Global Sisters Report about her life and her martyrdom:

Quincy Howard is a Dominican Sister of Sinsinawa. She lives in Wisconsin, doing planning work on behalf of her congregation. She recently ended a ministry on Capitol Hill as a federal policy advocate for social justice.