http://www.msnbc.com/news/916608.asp
NEW HAVEN, Conn., May 21 — A bomb exploded Wednesday in an empty classroom at the Yale University law school, police and FBI officials told NBC News. No injuries were reported, but a wall collapsed in the classroom, where law students had just finished taking a final exam.
Someone really didn't want to take their final but didn't set the timer right :exnbp: