This week’s new questions
What caused this pink geranium to produce red flowers after a piece broke off? And why is the east coast of Madagascar so straight?
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Tom Gauld: ‘If that’s Cern, I’m not here’
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Twisteddoodles on what’s new in science
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Humans
These ancient sand drawings could be a fifth type of palaeoart
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Which is the more efficient way to cool my car, A/C or the windows?
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Why do cats wash themselves, while dogs don’t? (continued)
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When was the first sunrise on Earth? (continued)
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This week’s new questions
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Young adults fall over if texting while walking, find scientists
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Life
Why you shouldn’t worry about keeping plants in your bedroom at night
There is a belief that keeping houseplants in our bedrooms at night is dangerous because they compete with us for air, but in reality they have a negligible effect on the indoor atmosphere, says James Wong
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Tom Gauld reveals the Venn diagram of a flying object
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Twisteddoodles: Mixing chemicals – fiction versus reality
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Life
Photos capture mission to rescue seagrass meadows in the the Baltic
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Mathematics
The easy tricks that can maximise your lottery winnings
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