After like 2 hours, my grandmother came into the bathroom and proceeded to tell me this story about a prince covered in dirt that could only travel via soap bubbles and how he stayed in the bath too long and ended up washing away before he could get the princess.

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The team conducted a series of experiments in which known quantities of five such chemicals were mixed with water and passed through a dishwasher, a washing machine, a shower head inside a shower stall or a tap in a bath, all inside a specially designed chamber.

ECONOMIST: Indoor pollution