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Jim Al-Khalili: How to live a more rational, scientific life
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Watch the latest science news, discoveries and big ideas from 91av's video team, featuring interviews, livestreams and more. From robotics to rare animal behaviour, lose yourself in science.
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NASA plans to use sound waves to help astronauts pass kidney stones
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Foot tickling machine could help beat stress by inducing laughter
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Finally, a robot that can peel a banana without smushing it to bits
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What are odd radio circles?
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River: New film shows Earth's waterways from stunning perspectives
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'BirdBot' has robotic legs more efficient than more complex devices
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Martin Rees interview: From the Big Bang, to a billionaire space race
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Endurance wreck: Ernest Shackleton's lost ship found off Antarctica
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Shackleton exhibition showcases the power of Antarctic photography
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Caroline Criado Perez: Inside the data gender gap
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The underwater sea farm that's like a space station
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