A woman tries on a pair of Bluetooth glasses that use language alerts to keep people awake while driving at the China International Gifts, Premium and Houseware Exhibition in Beijing on Nov 13, 2013, the first day of the exhibition. The event will last through Friday. [Photo by Zou Hong/Asianewsphoto]

Mei Lun and Mei Huan, 120-day twin giant panda cubs sleep on the weighting table at Zoo Atlanta, the US, Nov 13, 2013. The two furry cubs, who are the fourth and fifth cubs born in the zoo to 15-year-old Lun Lun and her partner, Yang Yang, were the first panda twins born in the US. They are expected to meet the public by the end of this year. [Photo/Xinhua]