Harvard students and alumni volunteered on more than 70 projects during yesterday's Global Day of Service. In Allston, students prepped the Gardner Pilot Academy for the new school year by painting, cleaning up the playground, and gardening. Another group sorted and organized book donations at the Honan-Allston Library, while others cleaned the streets of Harvard Square. ⠀ ⠀ #HarvardServes #Harvard⠀ ⠀ Photos: Jon Chase/Harvard Staff Photographer