When President Bill Clinton dedicated the Grand Staircase-Escalante National Monument in 1996, ending a battle between mining interests and environmental activists, he held up Terry Tempest Williams’ anthology Testimony: Writers Speak on Behalf of Utah Wilderness and said, “This made a difference.” Both as an activist and a prolific writer, Williams, a sixth-generation Utah Mormon, has become a leading voice for the desert West. Williams presents her latest work, When Women Were Birds, on Monday, June 18, at Book Passage. 51 Tamal Vista Blvd., Corte Madera. Free. 5pm. 415.927.0960.