Q What are some of the longest lifespans in fish? A Technically the longest lifespan lies with the Greenland shark, which live a staggering 250-plus years – perhaps even more than 500, in some cases.

Are you looking for a mental challenge? This month’s brilliant brainteasers will take you one step closer to a smarter you

Amazing answers to your curious questions

The answers to the clues all read in a clockwise direction round the clue number. Answers can start in any of the six spaces around the clue number. The number in brackets after each clue shows in whi

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