What altitude can birds cope with, and which species soars highest? Read more
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How high can birds fly?
What altitude can birds cope with, and which species soars highest?
Is my smartwatch good for my health?
Do smartwatches reliably monitor fitness? And can they make us healthier?
Why can't I remember my early childhood?
Some huge milestones happen in our first years of life - but why do we forget them?
Is anything truly random?
A question about bathroom tiles has us wondering whether everything is pre-determined
Why isn't the sky green?
Why do we see so many colours in the sky, but never green?
Whatever happened to tangerines?
Can we track down a tangerine variety lodged in one listener's memory?
