This week’s new questions
Why snails leave dotted trails? And how does hair “know” where to kink?
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The strange case of an octopus with 36 arms
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Twisteddoodles presents a history of the early 21st century
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What would happen to our planet if the sun suddenly disappeared?
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Is there an advantage to insects of their bites making us itch?
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What are the origins of the yoghurt-making bacteria in milk?
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This week’s new questions
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Amazing image taken with a camera obscura shows photography’s origins
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Why ‘100 billion molecules per serving’ is not as good as it sounds
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Life
The Big Butterfly Count has just kicked off – here’s how to help
Over the next few weeks, the Big Butterfly Count needs help to find out the state of the UK’s butterflies. Layal Liverpool tells you how
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Tom Gauld takes precautions to avoid hay fever
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Tom Gauld’s optimistic chemist
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Twisteddoodles gets a photo op with scientists
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How fast should I cycle to avoid punctures?
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