The team encounters the most feared event in weather - the hurricane. Florida-based stormchaser Mike takes us on a wild ride into the eye of the storm and we meet three childhood friends who had their lives turned upside down when Hurricane Ike struck their homes in Texas. Leo is challenged to take hurricane-force winds head on and Zoe learns how we are designing buildings to cope with their awesome force.
The team investigates wildfires and discovers how they rage all over the world leaving a trail of devastation and destruction. We travel to Colorado and meet one of the youngest female fire fighters in the US who has been on the front line and tackled wildfires head on after her house and part of her neighbourhood was burnt down. Zoe experiences first-hand what it feels like to try and outrun a wildfire and Leo is challenged to see how long he can survive in raging heat of up to 800 degrees in a special fire chamber experiment.
In this Fierce Earth special, 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. The pair endure a special test to work out what colour clothing is the best to wear in heat; Clare finds out what it's like to go to school in the world's hottest place; Leo becomes one of the first people in the world to climb the hidden canyons. Later, in the intense heat, Leo completes a section of the Badwater Ultramarathon, a race five times longer than the London marathon.
The team investigate the terrifying giant waves of the tsunami. Zoe and Dougal travel to Japan to meet child survivors of the 2011 disaster and test ride the brand new tsunami escape pod. Meanwhile, Leo attempts a very unusual route to safety when all else fails.
The team explores the phenomenon of the earthquake. Clare and Mike train with one of the top international rescue teams. Leo takes on a dangerous cliff climb with a very special partner, whilst Dougal and Zoe are in Tokyo to find out how people stay safe in the most earthquake prone city on the planet.
Leo and Mike enrol as pylon workers in Florida to find out how the men who do it avoid killer lightning strikes, and we meet the UK boy who cheated death when he was struck by lightning.
Dougal explores the secret lava tubes of Etna and climbs Stromboli for a face-to-face encounter with an erupting volcano. Meanwhile, Leo finds evidence of a volcano where you’d least expect it.
Leo asks what would it take to survive the awesome power of a tornado?
Leo goes in search of the coldest environments!
Leo takes on nature to see if he can withstand the power of an extreme flood.
The team travels to Morocco, North Africa, and visits the Sahara Desert. Leo Houdling is put to the test when he discovers how to escape the grip of quicksand, and Dougal Jerram explores how sand can be a powerful and destructive force for those living in the area. Meanwhile, Leah Gooding meets the children who roam the desert.
American storm chaser Mike Theiss reveals how Boston came to a standstill after a blizzard in 2013, and Leo investigates the effect of wind chill in one of the UK's most extreme wind tunnels.
The team discovers the secrets of ice, as Leo Houlding learns about the properties of the substance on a bobsleigh in the Swiss Alps. Mike Theiss witnesses the devastating power of ice storms in eastern America, and Clare Nasir and Dougal Jerram reveal how glaciers are formed.
The team travels 6,000 miles to Chile to visit the Atacama Desert - the driest place on Earth. Leo Houlding sky dives out of a plane to reveal why the air is so dry, and Clare Nasir discovers an ingenious way of finding water.
The team travels the length of India tracking the monsoon as it passes over the country to the village reputed to be the wettest place in the world. Leah Gooding reveals how the locals deal with the rain, while Dougal Jerram abseils down a large waterfall and explores the huge cave systems created by the torrential downpours.
The team travels to the French town of Tignes in the Alps, where Clare Nasir and Dougal Jerram go skiing and learn about the threat posed by avalanches. They also test out the latest survival technology.
The team explores the threat of landslides in the UK as Leah Gooding travels to the Isle of Wight to find out why it is under constant threat from erosion. Plus, Dougal Jerram explores the biggest sinkhole in Britain.
The team travels to Iceland - a country created by volcanos. Dougal Jerram dives into the sea to touch the tectonic plates of Europe and America, while Leo Houlding explores the power of a geyser.
The team explores the power of the sea as Leo Houlding and Claire Nasir travel to Santa Cruz, California, to participate in a surfing lesson. Leah Gooding experiences a fast-rising tide in the Isle of Sully, and Dougal Jerram helps to guide a supersized ship into one of the UK's busiest ports.
Leo Houlding looks back over his top ten fierce moments, from freezing blizzards to boiling hot deserts. Plus, a look at the number one challenge which pushed him to his limits.
