Why do we throw our heads back when experiencing emotions? part 2
The head lift is a whole-body declaration that the body senses something important, explains one reader
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This week鈥檚 new questions
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Why do we throw our heads back when experiencing different emotions?
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How do sea molluscs create the consistent patterns on their shells?
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If Earth exploded, how many rocks would have evidence of life? part 2
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Why do we use pillows? part 3
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This week鈥檚 new questions
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Is it more efficient to dry towels hung up portrait or landscape?
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If Earth exploded, how many rocks would have signs of life?
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Why do we scream in fear? part 3
One reader explains how we may have a lot to learn from how dogs respond to threats
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Why do jewellery chains become so tightly knotted together? part 2
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This week鈥檚 new questions
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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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