They’re huge funnels of wind fallen from the sky, travelling at great speeds, sweeping up everything in their path. One of the most affected countries is the USA, which experiences approximately 1,200 tornadoes every year. With wind speeds inside their vortex reaching up to 500 km per hour and travelling at the speed of a high-speed train, tornadoes are capable of destroying everything in their path. But how do they start? How can we predict them and minimise their destruction?
Avalanches can reach speeds of 30 km an hour, exerting a force ten times stronger than cyclones. How can they be predicted and their impact limited?
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Every year, 30 million bolts of lightning hit the earth. No zone is spared. So what is the best defence? And why are certain geographical areas increasingly affected?
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Combining ice cold temperatures, snow and extreme wind, this episode explores the destructive and unpredictable nature of blizzards.
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