This Fierce Earth special takes viewers on a journey to one of the world's coldest and most hostile places on the planet - the Yukon Territory in Canada. Show more

The team unlock the secrets behind king-sized waves and fast-rising tides. Leo and Clare travel to Santa Cruz in California to take a surf lesson from two teenage surfing stars. Show more

The team travel 6000 miles to the country of Chile and the Atacama Desert - officially the driest place in the world. Show more

The team discover the secrets of ice and how it shapes our planet, as they witness the devastating power of ice storms and learn how glaciers are formed. Show more

The team travel to avalanche country and the French ski town of Tignes, in the Alps. Clare and Dougal go skiing and test out the latest cutting-edge survival technology. Show more

The team travel to Iceland to explore a country created by volcanoes. Dougal dives into the sea and touches the two tectonic plates of Europe and America. Show more

The team encounters the most feared event in weather - the hurricane. Florida-based stormchaser Mike takes the team on a wild ride into the eye of a storm. Show more

The team investigates wildfires and discovers how they rage all over the world leaving a trail of devastation and destruction. Show more

The team investigates what happens when water becomes our enemy. Zoe and Leo find out what it's like to be trapped in a car during a flash flood. Show more

Clare and Leo head to Death Valley in California which is officially the hottest place in the entire world, with record-breaking temperatures of a sizzling 57 degrees centigrade. Show more

The team explores the phenomenon of the earthquake, training with international rescue teams and discovering how people stay safe in Tokyo, the most earthquake prone city on Earth. Show more

The team investigate the giant waves of a tsunami. Zoe and Dougal travel to Japan to meet child survivors of the 2011 disaster and Leo Houlding attempts an unusual route to safety. Show more

The team take on one of the most feared forces on the planet - the volcano. Dougal explores the secret lava tubes of Etna. Show more

The team investigate what makes the thundercloud so feared and Leo faces some giant hailstones. Leo and Mike enrol as pylon workers in Florida. Show more

The team investigate tornadoes, where their power comes from and what happens when it's unleashed. Leo puts tornado-proof materials to the test in a high-velocity lab experiment. Show more