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We tackle gravity - a fundamental force of the universe, yet also an everyday mystery
Do food allergies vary around the world – and if so, why?
Why is one partner usually the norm for humans around the world?
The wetness of water seems obvious - but dive into the science and it's not so clear cut
Can we track down a tangerine variety lodged in one listener's memory?
Why do we see so many colours in the sky, but never green?
A question about bathroom tiles has us wondering whether everything is pre-determined
Some huge milestones happen in our first years of life - but why do we forget them?
Do smartwatches reliably monitor fitness? And can they make us healthier?
What altitude can birds cope with, and which species soars highest?
