Charley embarks on another epic journey, this time exploring America. He begins by exploring the lava fields of Hawaii Island and then taking to the waters off Waikiki Beach in an outrigger canoe. Charley then heads north to Alaska, where he tries to fulfil a boyhood dream of building an igloo, before sampling life on the high seas when he boards a 100-year-old schooner for a trip off the Atlantic coast

• Charley Boorman