BJ’s on the trail of a $250,000 duck when the thief turns up dead. The search leads him and Paul to a deadly game on the Mexico border.

A stunning visual reference book for little geologists who love to find fascinating rocks all around them. Identify colorful gemstones, sparkly crystals, the to

Bestselling author Erik Weihenmayer, who Jon Krakauer calls “an inspiration,” tells the epic story of his latest adventures, including solo kayaking The Col

Includes chapters on rock-forming minerals, ores, igneous rocks, and precious minerals, and describes tests to determine minerals.