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Green laser makes the case for blue light and c...
An interesting new study by University of Colorado, USA: "Shining a light on what comes up when you flush". Researchers illuminated a toilet seat with green laser light to make the...
Green laser makes the case for blue light and c...
An interesting new study by University of Colorado, USA: "Shining a light on what comes up when you flush". Researchers illuminated a toilet seat with green laser light to make the...