A young American engineer sent to China to inspect the unruly Yangtze River travels up through the river's gorges searching for dam sites. Pulled on a junk haul

In 9th century China, a little girl sends a small jade pebble to travel with her father along the Silk Road. The pebble passes from his hand all the way to the

"Every pebble has many stories to tell. Its particular atoms, its crystals, its minerals, its grains, its textures, its strata, its tiny fossils bear evidence t

One moment Joseph Schwartz is a happily retired tailor in Chicago, 1949. The next he's a helpless stranger on Earth during the heyday of the first Galactic Empi