Plot: In this episode Dr Helen Czerski examines the hottest natural phenomena on the planet – lightning. Bolts of lightning five times hotter than the surface of the sun strike our planet over 3 million times every day – and yet we still know little about this deadly force of nature. Now, specialist photography is revealing how lightning travels through the air, high-speed cameras are unlocking the secrets of upward lightning that’s triggered by our urban landscapes, and scientific expeditions are capturing rare images of intense electrical discharges over 80 kilometres wide.
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|480P | 150.3 MB|
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