A gambling addict heated up a thermometer at the Paris airport with a hairdryer to make $34,000 by betting on the city's weather.

Polymarket records the temperature using a thermometer at the airport, but no one guards it. The trader placed a large bet on +22ºC (72ºF) and then "corrected" the weather using a portable hairdryer.

If you decide to try again, it's too late. Polymarket has switched its data source to a different thermometer — now with security.

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