The Hopkinton Sustainable Green Committee is seeking individuals and groups for Yellow Bag Day, a program to beautify the town and remove litter from roadsides. The event takes place Saturday, April 6, from 9 a.m.-noon (rain date is April 7). Volunteers will meet at the Town Common gazebo to get a yellow trash bag, pick up trash at an assigned area, then leave the bag at a nearby designated area. For more information, visit hopgreen.org or email hopgreenma@gmail.com.