Teen pregnancies in New York City have plummeted 27 percent in the past 10 years. Thomas Farley, commissioner of the NYC Department of Health & Mental Hygiene, explains why on the Brian Lehrer Show.

Dr. Thomas Farley, commissioner of the NYC Department of Health Mental Hygiene, discusses a recent report that shows the first ever decline in childhood obesity in New York, and the news that the city is at an record low for infant mortality.

Michael Saul of the Wall Street Journal, New York City Health Commissioner Dr. Thomas Farley, and Marion Nestle, professor in the Department of Nutrition, Food Studies, and Public Health and professor of Sociology at New York University and author of Why Calories Count, talk about Mayor Bloomberg's proposal to prohibit the sale of "super-sized" sugary soft drinks in NYC's restaurants.