As a middle schooler, Donna Adam’s experience on a cleanup campaign taught her that nature should be treated with respect. “I knew at that point that I would never litter again,” she said. But Adam’s recent service helping the environment started with a World War I memorial in a forest preserve. “I would see so much garbage in front of it, a place that was supposed to honor people who had died,” she explained. “I would just want to clean that memorial up every day.” Adam was inspired to launch a volunteer organization, “Clean Up—Give Back.” “I happened to be in a transition between jobs. I decided I would just form a group and see if I could get volunteers to come out,” she said. She thought her first cleanup, organized in only two days, would draw ten people. To her surprise, 27 volunteers showed up. “I said, ‘There really …