Animals & Plants
Do Fish Get Thirsty? The Answer Isn't What You Think
Do fish ever get thirsty? The answer depends on fresh water or salt water — and a quick lesson in body chemistry explains both cases.
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Animals & Plants
Why Onions Make You Cry (And How to Cut Them Tear-Free)
Why do onions make you cry, and can cutting them be tear-free? The chemistry behind the sting, plus the kitchen tricks that really work.
Human Body
Why Milk Beats the Burn of Chilli Peppers
Bite a chilli and water makes it worse — milk actually helps. Here is the chemistry of capsaicin and why dairy beats the burn.
Human Body
Why Humans Can't See in the Dark (And Cats Can)
Cats hunt at midnight while we stumble in the dark. Why human eyes are so bad at night, and what the retina's two cell types have to do with…
Animals & Plants
Why Is Grass Green? The Story Behind the Colour
Why is grass green instead of, say, red? Chlorophyll gives plants their colour. Here is why green, of all colours, won the sunlight job.
Earth & Space
Why We Have Seasons (Hint: Not Because of Distance)
Summer, winter, spring, autumn — why does the year keep changing? It is not distance from the Sun but Earth's quiet, constant lean.
History & Origins
Greenland Is Icy, Iceland Is Green. Someone Trolled Us.
Greenland is icy and Iceland is green, and the names are no accident. Blame Viking wordplay and a famous case of medieval trolling.
Things Around Us
Why Chip Packets Are Full of Air (It's Not Oxygen)
That 'air' in your chip packet is not a rip-off. It is nitrogen, and it keeps snacks fresh and unbroken. Here is the story behind the…
History & Origins
Why Monday Is Monday: The Norse Gods in Your Week
Monday, Tuesday, Wednesday — where do the day names come from? Norse gods, the Sun and the Moon all left their mark on the English week.
Animals & Plants
Why Are Bananas Curved? It's Not Why You Think
Bananas are curved because of a clever growth move — they start facing down and turn toward the sun. Here is the biology behind the bend.
Earth & Space
How Are Rainbows Formed? Light, Water and 42 Degrees
A rainbow splits the sky into seven colours, but the arc is not random. Light, water drops and a single angle explain how rainbows form.
Animals & Plants
Which Came First, Chicken or Egg? A Real Answer
Which came first, the chicken or the egg? Biology finally has a real answer, and it is far richer than a playground riddle.