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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.
Nature and landscape
Take a serene hike through an ancient forest, inspired by a Miyazaki masterpiece
Design and fashion
The mundane becomes mesmerising in this deep dive into segmented displays
A song of ice, fire and jelly – exploring the physics and history of the trumpet
Animals and humans
An artist and ants collaborate on an exhibit of ‘tiny Abstract Expressionist paintings’
How a curious question about colouring maps changed mathematics forever
A dreamy tribute to the music of Brian Eno, rendered in paint, soap and water
Technology and the self
Why we should worry less about ‘sentient’ AIs and more about what we’re teaching them
Why does the Sun occasionally flash green as it eclipses the horizon?
Tree-sit with activists as they fight industrial logging from 100 feet above the ground