Three things you need to know to get your summer off to a great start:

1. Give in to peer pressure. Sometimes it's the only way that positive changes can be made – from losing weight to counteracting terrorism. That's the conclusion of Pulitzer-prize winner Tina Rosenberg, who looks at the strange science of peer pressure.

2. Fat and obesity are red herrings – sugar's the real culprit. And it's damaging both our bodies and minds, argues Dr. Robert Lustig, a professor of clinical pediatrics at the University of California, San Francisco.

3. Walt Disney was a secret urban planner. His unrealized plan for Epcot was a fully operational city that would be a template for the rest of the world, says Neal Gabler, author of Walt Disney: The Triumph of the American Imagination. And Disney's lifelong obsession with planning and control shaped his approach to movies, too.