Explore the theory of place tectonics and learn how volcanoes develop, including 1,500 active sites around the world today. See how volcanic eruptions created the Hawaiian Islands and destroyed the island of Montserrat. Monitor Mexico's Paracutin volcano. Witness the devastation of Mt. St. Helens. Take a terrifying, but fascinating, look at these violent forces that shape our planet.

For Muslims everwhere, the ultimate goal is to make the Hajj at least once during their lifetime. This spiritual journey is the basic premise of an entire religion and sees improverished African Muslims mixing with their incredibly wealthy Western counterparts. This documentary follows some of the 20,000 Britons who make the journey to Mecca, unravelling the mysterious aura that surrounds this remarkable event, Combining the wondrous backdrop of Mecca with intriguing interviews that provide a previously undocumented view of Islam, Hajj will enchant both Muslims and Non-Muslims alike.

At 0.58 GMT on 26th December 2004, the Eurasian and Australia tectonic plates clashed together. The resulting earthquake - the biggest for 40 years - triggered a powerful tsunami. This giant wave carved a path of destruction across the Indian Ocean. Entire towns were swept away, popular holiday destinations were completely destroyed, more than 300,000 people were killed and millions were left indesperate need of food and shelter.