Linda Burek/Alamy
How do crows develop such distinct and individual “voices”? I don’t hear this with other bird species in my garden.
Jill Colman,
Peterborough, Cambridgeshire, UK
Jacob Lund/Alamy
Why do older people seem to experience time passing more quickly?
Derek Johnson,
Moreton-in-Marsh, Gloucestershire, UK
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