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Why can't my dog live as long as me?

And how do some animals tackle the ageing process head on?

• 28 mins

Can I improve my sense of direction?

Why some people get lost while others have a great sense of where they are

• 29 mins

Why am I good at jigsaw puzzles?

What skills do you need to complete a jigsaw puzzle? And why do we enjoy them?

• 32 mins

Why does pain sometimes feel good?

What makes people seek out unpleasant or painful sensations, like eating chilli?

• 29 mins