Tony sets off from Seattle on an Amtrak Cascades train into Canada, where he is struck by the beauty of Vancouver and the warmth of the locals. He then takes a two-day rail journey aboard the Rocky Mountaineer. While the other passengers relax and enjoy the luxury service, Tony is put to work in its kitchen. Lastly, he travels via Alaska to the small town of Talkeetna. Boarding a float plane, Tony flies over snow-covered mountains to reach the base of the Alaskan glaciers, where he witnesses the impact of climate change up close.

• Tony Robinson