'Panda Swap' Keeps Newborn Twins in Mom's Care

Zookeepers are playing a complicated game of "baby swap" with two new pink and fuzzy panda twins at the Smithsonian's National Zoo in Washington, D.C. The mother, 17-year-old Mei Xiang (may-SHONG), gave birth to the twins on Saturday (Aug. 22), delivering the first at 5:35 p.m. EDT and the second at 10:07 p.m., the zoo reported. But giant pandas (Ailuropoda melanoleuca) can care for only one cub at a time.