01: Avalanche | Dangerous Earth

Duration: 29'21''

Synopsis

Dr Helen Czerski looks at the anatomy of an avalanche. From shocking eyewitness footage from within an avalanche to detailed CT scans showing the microscopic changes that cause them, we can now capture exactly what happens as snow transforms into a deadly and unpredictable danger.

Further Information

More clips from Dangerous Earth

02: Volcano | Dangerous Earth

02: Volcano | Dangerous Earth

BBC Four | 2016 | 29'14''

Dr Helen Czerski looks at volcanoes. With shocking eyewitness footage of eruptions, and new thermal imagery and ultra high-speed photography, w...

03: Lightning | Dangerous Earth

03: Lightning | Dangerous Earth

BBC Four | 2016 | 29'13''

Dr Helen Czerski examines the hottest natural phenomenon on the planet - lightning. High-speed cameras show the secrets of upward lightning t...

04: Aurora | Dangerous Earth

04: Aurora | Dangerous Earth

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05: Tornado | Dangerous Earth

05: Tornado | Dangerous Earth

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06: Iceberg | Dangerous Earth

06: Iceberg | Dangerous Earth

BBC Four | 2016 | 29'12''

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BBC Four | 2016 | 1'33''

Dr Helen Czerski explains the impact that climate change is having on ice melting and sea levels rising.

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Faraday cage | Dangerous Earth

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BBC Four | 2016 | 2'20''

Dr Helen Czerski explains how planes are protected from lightning.

Glacier submarine melting | Dangerous Earth

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BBC Four | 2016 | 2'39''

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Iceberg B-31 | Dangerous Earth

Iceberg B-31 | Dangerous Earth

BBC Four | 2016 | 2'05''

Dr Helen Czerski explores how Iceberg B-31 separated from the Pine Island Glacier.

Iceberg colour and shape | Dangerous Earth

Iceberg colour and shape | Dangerous Earth

BBC Four | 2016 | 2'22''

Dr Helen Czerski explains why icebergs are white.

Iceberg sediment | Dangerous Earth

Iceberg sediment | Dangerous Earth

BBC Four | 2016 | 3'22''

Dr Helen Czerski discusses the important properties of the sediment contained in icebergs.

Lightning slowed down | Dangerous Earth

Lightning slowed down | Dangerous Earth

BBC Four | 2016 | 1'49''

Meteorologist Tom Warner films lightning at up to 100,000 frames per second.

Microburst | Dangerous Earth

Microburst | Dangerous Earth

BBC Four | 2016 | 1'27''

Dr Helen Czerski explains the final stage in the creation of a tornado.

Mount Nyiragongo lava | Dangerous Earth

Mount Nyiragongo lava | Dangerous Earth

BBC Four | 2016 | 5'03''

Dr Helen Czerski investigates the distinctive qualities of the lava from Mount Nyiragongo.

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Rhyolite eruption - Puyehue-Cordón Caulle | Dangerous Earth

BBC Four | 2016 | 3'50''

Supercell | Dangerous Earth

Supercell | Dangerous Earth

BBC Four | 2016 | 4'16''

Dr Helen Czerski discusses the particular weather conditions that produce a supercell thunderstorm.

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BBC Four | 2016 | 3'24''

Dr Helen Czerski explains how icebergs float and what makes them so dangerous.

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