Cambridge, MA, USA - September 27, 2012: Students and tourists rest in lawn chairs in Harvard Yard, the old heart of Harvard University campus on

- Image ID: KN25FK
Cambridge, MA, USA - September 27, 2012: Students and tourists rest in lawn chairs in Harvard Yard, the old heart of Harvard University campus on
agefotostock / Alamy Stock Photo
Image ID: KN25FK
Cambridge, MA, USA - September 27, 2012: Students and tourists rest in lawn chairs in Harvard Yard, the old heart of Harvard University campus on September 27, 2012 in Cambridge, MA, USA