Scoop: ROCK CENTER WITH BRIAN WILLIAMS on NBC - Today, February 22, 2013

- Dr. Nancy Snyderman reports on a group of Marines with male breast cancer who say that their disease was caused by drinking contaminated water at Camp Lejeune.

- With fewer than 1,600 pandas left in the wild, China is trying to save its national symbol from extinction by breeding them in captivity. At the Chengdu Research base for Giant Panda breeding, they've developed a state-of-the-art fertility clinic where high-tech science is used to create as many baby pandas as possible. It's one of the most massive and expensive efforts to save a species; some scientists are not in favor of the movement. Meet the baby pandas and the critics of the breeding program. Kate Snow reports.

- Millions of young readers grew up on Judy Blume books. Chelsea Clinton goes to Key West to visit Blume, who shares the story behind the first feature film being made of one of her books, Tiger Eyes, due out in May.

- BrIan Williams wraps up the broadcast with a few interesting items from the week that was. #ROCKBOTTOM

David Corvo is the senior executive producer, Alexandra Wallace is the executive producer and BrIan Williams is the anchor and managing editor of "Rock Center with BrIan Williams" (Fridays at 10p/9c). Follow us at RockCenterNBC.com, facebook.com/rockcenterNBC and @rockcenterNBC/#RockCenter.