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If you’ve ever peered into the eyes of a cat or a goat, you’ll have noticed that pupils can come in quite a few shapes and sizes. And those are just two among a great many animals – including geckos, toads, stingrays and cuttlefish – that demonstrate the diversity of pupil shapes in nature. With stylish and clever animation, this video from TED-Ed takes a brief dive into animal vision, detailing the wide range of pupil types in the eyes of the animal kingdom, as well as the fascinating ways they can shape perception and indicate a creature’s place in their ecosystem.
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Technology and the self
A filmmaker finds a tactile beauty in the creation of her prosthetic leg
11 minutes
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Knowledge
An Indigenous myth and a geological survey elicit two ways of knowing one place
4 minutes
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Biology
Beetles take flight at 6,000 frames per second in this perspective-shifting short
9 minutes
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War and peace
A war meteorologist’s riveting account of how the Allies averted a D-Day disaster
6 minutes
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Physics
What does it look like to hunt for dark matter? Scenes from one frontier in the search
7 minutes
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Biology
An elegy for a dying microbe explores what we really mean by ‘death’
9 minutes
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Biotechnology
It’s our responsibility to engineer corals that can weather the world we’ve created
11 minutes
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Physics
Imagining spacetime as a visible grid is an extraordinary journey into the unseen
12 minutes
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Engineering
For one of nature’s great builders, finding a mate means weaving the perfect nest
4 minutes