Warrington Science Symposium begins at 7 p.m. in Halpin-Harrison Hall, Stimpson Auditorium. This year’s speaker is Dr. Matthew Siderhurst of Eastern Mennonite University who will discuss how a better understanding of the chemical communications of insects can help reduce pesticide use and combat invasive species. A brief student poster sumposium is held after the talk. Contact Lecturer of Chemistry Domhnall OShaugnessy, Ph.D., MRSC. FREE