Hormone Levels Rise At The National Zoo

Scientists at the National Zoo say they have detected a rise in hormone levels in the female giant panda. That could mean Mei Xiang is pregnant. Or, it might not mean anything. Zoo veterinarians are conducting ultrasounds twice a week, but haven't found a fetus yet. A Chinese panda breeding expert helped zoo scientists artificially inseminate Mei Xiang in January. Their only cub, Tai Shan, was born in 2005.