Feeding Boulder, one grocery cart at a time By Emily Bernard Boulder Weekly The parking lot at 4830 Pearl Street hums on a weekday morning. Car doors open and close. Bus brakes sigh. Adults step out carrying reusable bags toward a modest one-story building that feels less like a charity and more like a neighborhood grocery store. Inside, shelves hold fresh produce, milk, bread, frozen meats. A shopper turns an apple over in her palm. Volunteers …