Winter will turn to summer, thanks to a new postage stamp launched in Oxford.
It is the first heat-sensitive stamp and Oxford postal workers were among the first to try it out.
The new stamp is printed with special ink that reacts to heat. Rich in colour, it depicts the changing nature of the weather.
Postmen Kevin Castle and Nick Bristow help launch the new stamps at Green College, Oxford
When touched, heat from the fingers instantly transforms a gloomy scene on the new first class stamp to a bright summer sky.
Mark Thompson, managing director of Royal Mail stamps and collectibles, said: "Just by rubbing the first-class stamp you can change the weather. If only it was that easy in real life."
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