Vice Vaccines

Scientists give a shot in the arm to the fight against smoking, drug abuse, and obesity

When Rachel Harrison was 16 years old, she took a drag from her first cigarette. She remembers loving it right away—the taste, the warmth, and especially the lightheaded rush that smoking gave her. Like a bad character in an after-school special, she chain-smoked an entire pack that first time while hanging out with other smokers from the popular crowd.