April 24: PORTLAND, Paul Rusesabagina, the man whose story inspired the film “Hotel Rwanda,” will speak at 7:30 p.m. at USM Abromson Community Education Center, Bedford Street. Free 780-4200

April 25: PORTLAND, Sen. George Mitchell will speak on “Globalism: What It Means for America,” at 4:30 p.m. at USM Abromson Community Education Center. $10/$5 780-4022

April 27: ORONO, Adria Elskus, U.S. of the U.S. Geological Survey and UMaine Department of Biological Sciences, will speak about river water toxicity at noon at UMO Norman Smith Hall. Free 581-3196

April 28: PORTLAND, Harvard biologist, David Haig, will speak on “The Divided Self: Brain, Brawn and the Superego,” at 7 p.m. at UNE Westbrook College Campus, 716 Stevens Ave. Free 221-4375

April 29: BRUNSWICK, Jing-dong Yuan from the Institute of International Studies in Monterey, will speak on “Dragon’s Rise: Chinese Military Buildup and East Asian Security,” at 2 p.m. at Bowdoin College Cleaveland Hall. Free 725-3046

April 29: BRUNSWICK, Hong Zhang from Colby College will speak on “Labor, Mobility and New Urban Citizenry: How Rural Migration Transforms Economic Boom Towns in South China,” at 3 p.m. at Bowdoin College Cleaveland Hall. Free 725-3046

May 4: ORONO, Karen Merritt, Ph.D. student at the Department of Civil and Environmental Engineering at UMaine, will speak about her research into mercury cycling in sulfide-rich sediments in the Penobscot River Estuary at noon at UMO Norman Smith Hall. Free 581-3196

May 7: BATH, Peter Kent will speak at 3 p.m. at the Chocolate Church Arts Center, 798 Washington St. $5/$8 442-8455