The hunt for a legendary ghost ship in Alaska reveals a corner of the United States once known as "Russian America." The Kad'yak was a Russian three-masted bark that sank in Icon Bay off Kodiak Island in 1860. It was bound for San Francisco, California, with a cargo of ice.

Draining Alaska's extreme north reveals the graveyard of a tragic fleet. The 1871 Whaling Disaster occurred when pack ice off Alaska's North Slope trapped 32 whaling ships.

Paleontologists journey from Patagonia to Canada to overturn popular misconceptions about dinosaurs and uncover the real Jurassic Americas. Discovered are a new species of titanosaur in Patagonia, Argentina; a new nodosaur from an oil sands mine in Alberta, Canada; and a pack of tyrannosaurs at Grand Staircase-Escalante National Monument, Utah.