Revealed: why grapes spark when you microwave them

Revealed: why grapes spark when you microwave them

Credit: Hamza K. Khattak, Trent University / PNAS

For more than two decades, millions of science-curious viewers have been captivated by online videos showing grapes sparking and creating light shows when microwaved. 

Scientists and commentators have posed theories explaining why this happens, but Canadian researchers have now solved the mystery once and for all, reporting their findings in the journal PNAS.

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