Nancy Tusek, a third-grade teacher in suburban Chicago, is calling it a career after years of lessons. Noel Brennan of CBS Chicago has the story....

The Smithsonian National Zoo is taking extra care to protect its animals from bird flu. Natalie Brand reports....

A high school transgender athlete at the center of a searing political storm went home a winner at this weekend's California state track championships. Elise Preston has the story from Burbank....