Where do banknotes go when they die?
They don’t go to heaven where the angels fly.
Money does not grow on trees, but you might be surprised to discover that it can help trees grow.
That is because after banknotes are withdrawn from circulation and shredded into tiny pieces, they can be used in compost.
This is the fate for millions of £20 notes featuring the image of composer Edward Elgar which will no longer have legal tender status after 30 June.
After that date, shops will be less likely to accept these notes.
Banks, building societies and Post Offices will still accept them for a few months, but they are not legally obliged to exchange them for the replacement - a £20 note featuring economist Adam Smith.