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During breeding season, Alaska’s chum salmon abandon their instinct for survival and transform into creatures singularly focused on mating. After their perilous migrations to spawning grounds, frequently thousands of miles away, the salmon die, becoming food for animals of the air, land and water, or decomposing into the ground. Shot over three weeks, Paul Klaver’s breathtaking film combines time-lapse and conventional photography to chronicle the chum salmon’s annual journey through the Yukon River. The result is a powerful vision of the cyclical processes of vast ecosystems, and the inherent balance of the natural world.
Director: Paul Klaver
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History of science
Ideas ‘of pure genius’ – how astronomers have measured the Universe across history
29 minutes
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Meaning and the good life
Why Orwell urged his readers to celebrate the spring, cynics be damned
11 minutes
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Making
On the Norwegian coast, a tree is transformed into a boat the old-fashioned way
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Animals and humans
One man’s quest to save an orphaned squirrel, as narrated by David Attenborough
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Computing and artificial intelligence
A future in which ‘artificial scientists’ make discoveries may not be far away
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Earth science and climate
Images carved into film form a haunting elegy for a disappearing slice of Earth
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Biology
Butterflies become unrecognisable landscapes when viewed under electron microscopes
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Engineering
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Cognition and intelligence
A father forgets his child’s name for the first time in this poetic reflection on memory
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