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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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Astronomy
The remarkable innovations inspired by our need to know the night sky
5 minutes
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Knowledge
Why it takes more than a lifetime to truly understand a single meadow
11 minutes
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Physics
Groundbreaking visualisations show how the world of the nucleus gives rise to our own
10 minutes
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Earth science and climate
There’s a ‘climate bomb’ ticking beneath the Arctic ice. How can we prepare?
8 minutes
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Physics
To change the way you see the Moon, view it from the Sun’s perspective
5 minutes
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Ecology and environmental sciences
GPS tracking reveals stunning insights into the patterns of migratory birds
6 minutes
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Space exploration
The rarely told story of the fruit flies, primates and canines that preceded us in space
12 minutes
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Neuroscience
This intricate map of a fruit fly brain could signal a revolution in neuroscience
2 minutes
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Computing and artificial intelligence
The ‘cloud’ requires heaps of energy to stay aloft. Could synthetic DNA be the answer?
12 minutes