At the next Science on Tap, Scott Burns, professor of geology and past chair of the Department of Geology at Portland State University, will share the story of J. Harlen Bretz’s cataclysmic Missoula Floods discovery and will discuss the floods’ effect on the region’s landscape. Hear his presentation at 7 p.m. Feb. 6 at the Kiggins Theatre, 1011 Main St., Vancouver. Tickets range from $15 to $45 at kigginstheatre.com/movie/science-on-tap-cataclysms-on-the-columbia. For more details about this event or about Science on Tap, visit scienceontaporwa.org.