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 Earth's interior. Viewers learn about plate tectonics, geysers and geothermal power.

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

Introduction: Boiling Earth: Fierce Earth --(Series 2) (1:24) -- Earth's Composition -- (3:07) -- The Silfra Fissure -- (4:00) -- The Jetovator -- (3:15) -- Boulby Mine -- (6:08) -- Geothermal Power -- (4:29) -- Mid-Atlantic Ridge -- (1:58) -- Viking Traditions -- (3:06) -- Credits: Boiling Earth: Fierce Earth -- (Series 2) (0:52).