Sweetgreen was the brainchild of three eco-conscious Georgetown University students who wanted to provide homegrown, healthy options for diners. The first Sweetgreen opened in 2007; today, these eateries number more than 80, popping up all over D.C., and in cities throughout the country. Choose one of the 15 or so signature salads (my fave, the hummus tahina: chopped romaine, shredded kale, tomatoes, feta, falafel, hummus, red onion, cucumbers, breadcrumbs, served with a cucumber tahini yogurt dressing), or create your own. Note: Teaism, with a location at 800 Connecticut Ave. NW, presents another excellent option for healthy dining (weekdays only; closes at 5pm).