Today on Current State: Michigan Department of Natural Resources director Keith Creagh discusses criticism of the DNR on containing the New Zealand mud snail in three state rivers; a talk with Susan Bandes about her book "Mid-Michigan Modern from Frank Lloyd Wright to Googie"; a talk with U.S. Sen. Cory Booker about campaigning in Michigan on behalf of Hillary Clinton; and new Happendance School leader Heather Vaughn-Southard.