04: Aurora | Dangerous Earth

Duration: 29'36''

Synopsis

Dr Helen Czerski looks at the latest scientific insight into the aurora - dancing lights in the night sky that have fascinated cultures throughout our history.

Further Information

More clips from Dangerous Earth

01: Avalanche | Dangerous Earth

01: Avalanche | Dangerous Earth

BBC Four | 2016 | 29'21''

Dr Helen Czerski looks at the anatomy of an avalanche. From shocking eyewitness footage from within an avalanche to detailed CT scans showing...

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...

05: Tornado | Dangerous Earth

05: Tornado | Dangerous Earth

BBC Four | 2016 | 29'14''

Dr Helen Czerski peers into the heart of the storm to find out how advances in technology are giving new insight into tornadoes - the fastest w...

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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BBC Four | 2016 | 3'10''

Dr Helen Czerski demonstrates the differences between effusive and explosive eruptions.

Eyjafjallajökull ash | Dangerous Earth

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BBC Four | 2016 | 4'32''

Faraday cage | Dangerous Earth

Faraday cage | Dangerous Earth

BBC Four | 2016 | 2'20''

Dr Helen Czerski explains how planes are protected from lightning.

Glacier submarine melting | Dangerous Earth

Glacier submarine melting | Dangerous Earth

BBC Four | 2016 | 2'39''

How glacier submarine melting is causing more icebergs to separate.

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.

Phreatic eruption - Mount Ontake | Dangerous Earth

Phreatic eruption - Mount Ontake | Dangerous Earth

BBC Four | 2016 | 2'58''

Dr Helen Czerski examines the 2014 phreatic eruption of Mount Ontake, Japan and why it was hard to predict.

Rhyolite eruption - Puyehue-Cordón Caulle | Dangerous Earth

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.

The threat of icebergs | Dangerous Earth

The threat of icebergs | Dangerous Earth

BBC Four | 2016 | 3'24''

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

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