Come clean: What鈥檚 the difference between shampoo and shower gel?
Are shampoo and shower gel different, and if so, how? Some more thoughts from our readers on pH, soap and the benefits and dangers of sodium hydroxide
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This week鈥檚 new questions
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Physics
How quantum computing got a boost from an experiment in a cornfield
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Technology
51动漫 got an early glimpse of voice recognition technology
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Technology
Peer into a giant, half-formed ship that can hold 18,000 containers
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Tom Gauld on scientists explaining theories to their mothers
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Twisteddoodles ponders if disaster movies were real
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Humans
How to make a sourdough starter and delicious sourdough bread
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The Hogwarts houses that attract different types of doctor
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Atomic space: What is in the space between a proton and an electron?
Our readers explain why the 鈥渟pace鈥� between subatomic particles isn鈥檛 actually empty at all.
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Hot and cold: Why do you feel cold at the same temperature in winter?
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This week鈥檚 new questions
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Humans
Autism isn’t a defect 鈥� here’s why we should embrace neurodiversity
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Life
World’s only known pink manta ray spotted in the Great Barrier Reef
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