Boulder Public Library hosts Chalk4Peace, a global art project using sidewalk chalk, on Sunday, Sept. 11, from 1 to 5 p.m. In recognition of the tenth anniversary of the 9/11 tragedy, the theme is “Stories of Peace and Compassion.”

Chalk4Peace takes place on the concrete plazas outside both the north and south entrances of the Main Boulder Public Library. Chalk and pastels are provided for all who wish to express themselves, along with artists who will be working all afternoon

At 3 p.m., Linda Jacobson will perform a program of stories about compassion, and at 4 p.m., storyteller/musician Julie Davis will perform stories and songs. Both performances are in the Canyon Theater. Everyone is welcome, and the event is free.

The Main Boulder Public Library is located at 1001 Arapahoe Ave. Library information: 303-441-3100 or www.boulderlibrary.org.