Twisteddoodles on the ‘vibes’ being off
This week's cartoon from Twisteddoodles
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Environment
Sebastião Salgado’s stunning shots of the world’s icy regions
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Why are MRI machines so noisy and what stops us making them quieter?
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Will the ocean ever be too salty for life to thrive? Part 2
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If all Earth’s water were put in a ball, how large would it be? Part 2
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This week’s new questions
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Holy prosociality! Batman makes people stand for pregnant passengers
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Environment
Do weeds really love poor soil? Not if you look at the science
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Mathematics
Bored of snakes and ladders? Some maths can help bring back the fun
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Do birds actually sleep more in winter?
When birds sit quietly on a branch for long periods during winter, they are not usually sleeping but conserving energy, explain our readers.
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Is the concentration of salt in the oceans gradually increasing?
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Why do we use pillows? part 2
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This week’s new questions
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Think of a card, any card – but make it science
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