The most massive structure in the Universe, the Hercules-Corona Borealis Great Wall, challenges cosmological models with its ...

CHP chairman He Shuzhong hopes to turn Sun's lonely quest into a full-fledged movement. "What we need is an army of Mr. Suns," says He. "If there were 5,000 or 10,000 like him, the Great Wall ...

Construction continued up to the Ming dynasty (1368–1644), when the Great Wall became the world's largest military structure. Its historic and strategic importance is matched only by its architectural ...