Juliet Eilperin investigates the fascinating ways that individuals and cultures relate to the ocean's top predator-the shark. With a reporter's instinct for a good story and a scientist's curiosity, her book, Demon Fish offers an up-close, eye opening adventure spanning the globe about these mysterious creatures. Health professional Heather Brittany discusses gestational diabetes. GD is high blood sugar diabetes that starts or is first diagnosed during pregnancy. Research indicates that taking a 90 minute nap not only boosts and builds brain power, but it also prevents disease. Cynthia Brian shares the siesta shut-eye strategies to keep you healthy, wealthy, and wise.