On April 15, 2011, the University of Western Ontario is hosting the 8th annual Earth Day Colloquium. This one day event celebrates the interdisciplinary nature of environment and sustainability. There will be presentations from students, faculty members and keynote speakers from a broad range of fields including science, engineering, business, policy and management, medicine, and more. This is a free event and all are welcome. For those interested in presenting a talk, registration is now open until March 25, 2011. For those wishing to attend without giving a talk, an RSVP is appreciated.