A contributor to The New Yorker and The New York Times, Western author Terry Tempest Williams has become a well-known voice for environmental and social issues. Her new book, Finding Beauty in a Broken World, from which she will read at the Tattered Cover, recalls war survivors in Rwanda and Southwestern prairie dogs. 7:30 p.m. Tattered Cover LoDo, 1628 16th St. Free. 303-436-1070, official website