BU Events Calendar Alumni (May 2 through July 31) Thursday, May 4 4:00 PM Department of Earth and Environment Spring Professional Lecture Friday, May 5 12:45 PM EH Gijs van Seventer Seminar Series Friday, May 12 8:00 AM 9th Annual Spring Showcase: Early Childhood Learning Lab Sunday, May 21 9:00 AM Law School Commencement