Probably someone had a test they didn’t want to take but still better safe than sorry.
Via Washington Post:
Three classroom buildings and a dormitory at Harvard were evacuated Monday afternoon because of a bomb threat that was e-mailed to campus.
Shortly after 12:30 p.m., Harvard University officials posted a warning on its Web site:
“An unconfirmed bomb threat has been received. The Science [Center], Sever, Emerson, and Thayer Halls are being evacuated. More info to follow.”
Shortly before 1 p.m., the university announced:

