Tropical temperatures at Graspop: does that black T-shirt make your festival day harder?

As of today, thousands of music lovers can enjoy the Graspop Metal Meeting in Dessel again. This year the sun ensures summery or even tropical temperatures on the meadow. So a lot of sweating and puffing for the many festival goers in their black clothes. Or is that just a myth, that black clothing is so much warmer than white? HLN science expert Martijn Peters explains.

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