Dave Davies

Parents should be paying very close attention to the digital media their children are using, says child advocate James Steyer. "Young people in particular often self-reveal before they self-reflect," he says. "There is no eraser button today for youthful indiscretion."

One-third of American today are obese, and another third are overweight. A new HBO documentary series, The Weight of the Nation, explores how our country got this way and what can be done to tackle the growing national health crisis.

Two reporters for The New York Times detail their monthlong investigation of America's racetracks. Since 2009, more than 6.600 horses have broken down or showed signs of injury at U.S. racetracks, a rate much higher than in other countries.