Earth & Environment
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How does Santa deliver all those presents in one night?
How hot is a candle flame?
If you hold up a grain of sand, the patch of sky it covers contains 10,000 galaxies
Why do we dye our hair?
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Is dark matter and dark energy relevant to the average person?
A dripping tap can waste more than 5,500 litres of water a year
How do wings work?
How does Curiosity take a selfie?
What are lens flares?
You’re 13 times more likely to laugh if you are amongst other people who are laughing
What are those floaty things in your eye?
Which waves are for which purpose?
Can you weigh helium in a balloon?