Vision is so important to people - to most animals, really! We have specific and special eyes that collect light and code images, and a big part of our brain is dedicated to decoding that information. But the eye and optic nerve and brain are all made up of cells - so can any individual cells actually see or is vision an emergent behavior of cells, tissues and organs? When I saw this paper about vision in single cells, I as amused to learn about the hypothesis that mitochondria form part of see-ing parts of simple tiny organisms. I wondered what else was known about the evolution of sight and stumbled across this TedX talk. You might find it fun, too!
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