Exploring the savage power of avalanches. Deceptively graceful, millions of tons of snow and ice crashes down mountains, destroying towns and villages in minutes.
Discover how snow has killed tens of thousands of people, led to the mass extinction of animals and sculptured the landscape in which we live.
Examining some the Earth's most devastating floods, from the storm surge of hurricane Katrina to the misery caused by the Boscastle flood in Cornwall.
Follow two devastating storms that hit North Carolina in 1996, from tense activity in the crisis centres to the air force planes that tracked them.
In this electrifying episode find out why lightning is the most powerful electrical force on the planet, with over ten million lightning bolts around the world each day.
Find out what causes a tidal wave. This natural killer can sometimes travel up to 500mph, presenting a wall of water over a 100 feet high by the time it reaches land.
Robert Naughton
Narrator
Bill Cosmas
Producer
Paul Gasek
