The 21st annual Borns Symposium at the University of Maine, April 22–23, this year will celebrate the 40th anniversary of the Climate Change Institute. The event, named for institute founder Harold Borns, features UMaine climate change scientists presenting their latest research. Highlights of the two-day symposium, which is free and open to the public, include the David Clayton Smith Lecture, “The History of the Climate Change Institute: A 40-year Record of Excellence,” by professors emeriti George Jacobson and Hal Borns, 6:10 p.m., April 22, followed at 7 p.m. by alumni lectures: “The Human and Environmental Interactions in the High Andes of Peru: An Interdisciplinary Perspective,” by Kurt Rademaker and Gordon Bromley; and “Late Glacial and Holocene Climate Changes Registered by Small Ice Caps at High and Low Latitudes,” by Meredith Kelly. Research presentations take place the afternoon of April 22 and throughout the morning and into the afternoon of April 23. The symposium will be streamed using Google+. For more information or a full schedule of the research sessions, or to request disability accommodations, contact Betty Lee, 207.581.3406.