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See all the questions we have already investigated and answered

Although we can’t answer all the many emails we get individually, we read and consider all your suggestions with great interest and gratitude.

Why do you itch and should you scratch?

Here are a dozen facts which will really get under your skin.
Why do we faint?

Why do humans faint but giraffes don't?
Are you a secret ginger?

Why do non-ginger parents sometimes give birth to redheaded children?
What shape is the Earth?

Drs Adam Rutherford and Hannah Fry hunt for a true sphere.