Featuring footage from the BBC and other natural history archives, the Fierce Earth series showcases the power of nature's fury. This episode focuses on the dangerous qualities of ice. Leo Houlding explores the properties of ice while bobsledding, Mike Theiss witnesses the power of ice storms, and Clare Nasir and Dougal Jerram explain how glaciers form.

Streaming video file encoded with permission for digital streaming by Infobase on October 01, 2015.

Introduction: Ice: Fierce Earth --(1:36) -- How Ice Forms -- (3:36) -- Icebergs and Ice Sheets -- (2:29) -- Iceland Volcanoes -- (5:00) -- Volcano Evacuation -- (2:17) -- Supercooled Water -- (4:03) -- Icelandic Association for Search and Rescue -- (4:17) -- Bobsledding -- (4:12) -- Credits: Ice: Fierce Earth -- (Series 2) (0:55).