Earth us a paradox - a fertile world three-quarters covered with water, yet in danger of running dry. Overuse and pollution have drained most of its fresh water, and scientist Francesca Carval's brilliant formula for desalination has vanished with her plane over South America. But when Kurt Austin and his NUMA team come across a pod of dead whales, their investigation takes them to the Venezuelan jungle where a cadre is bent on controlling the world's...

On a journey that will take them to Tibet, Nepal, China, Italy, and Siberia, the Fargos find themselves embroiled with black-market fossils, an ancient Tibetan kingdom, a lost landmass in the North Sea, Stone Age ostrich egg shards inscribed in a cryptic language, a pair of battles separated by thousands of miles and hundreds of years ... and a skeleton that could just turn the history of human evolution on its head.