Leymah Roberta Gbowee (born 1 February 1972) is a Liberian peace activist. In 2011 she won the Nobel Peace Prize with Ellen Johnson-Sirleaf and Tawakel Karman. This made Gbowee the second African woman to win the prize. Her book "Might Be Our Powers: How Sisterhood, Prayer, and Sex Changed a Nation at War" was published in 2011.