Adolescent drinking isn't a mere rite of passage, it's a serious public health problem. Establishing civil liability for adults who willfully serve booze to minors will help fight the epidemic, but it's far from a cure. Fortunately, there are hopeful signs like a reduction in drunk driving deaths, including for young people, in recent years. But Maryland still has a long way to go — public health studies estimate about 108,000 teens living in the state have participated in binge drinking of some kind in the last month. How many did so under adult supervision? No one knows, but thanks to the new liability standard, perhaps it will happen a lot less frequently from now on.