After being alive for just one week, the panda cub born to 14 year old Mei Xiang has died at the National Zoo. The keepers had found the baby dead yesterday morning after hearing distress calls from the mother. It took them about an hour to be able to retrieve the cub and tried to bring the panda back to life, but were not successful. I had been so excited that the cub was born. I don't think anyone was expecting bad news like this.