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New research has shown the dye methylene blue kills malaria parasites at an unparalleled rate and is safe for human use. In the recent study, which was conducted in Mali by scientists at Radboud ...

While the dye that changes color after you pee in a pool might be a myth told to children to shame them from doing so, there are other ways to keep track of people diddling in the deep end.

Green pee can be caused by green or blue food dye in things like cereals, ice cream, and candy. If you have a UTI, your urine may appear green because of bacteria called pyocyanin. Green pee may also ...