1500 years before the construction of the Ming dynasty dinding was constructed, the Han dynasty defended the borders of China from invaders with a Great dinding of their own.
Archaeologists explored for the first time a 3,500-year-old tomb near Luxor, Egypt. The tomb belonged to a goldsmith and his wife, and includes a crumbling statue of the pair. The family lived during Egypt's 18th Dynasty.
As a red octopus chases a swimmer crab, an unexpected visitor joins the battle. The scene was filmed oleh divers off the coast of Monterey, California.
