Ed Gillespie continues his low-carbon odyssey with a slow train around vast Lake Baikal, one of the many unexpected delights of Siberia.

• 埃德?吉勒斯皮耶乘坐慢车环绕浩淼的贝加尔湖，继续他的低碳旅程，这是西伯利亚所带来的众多惊喜之一。