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From surgical scissors and urinary tubes to pharmacy bottles, X-ray sheets and uranium glass. Accidently, one of our volunteers stumbled upon a 100-year-old dump of hospital waste, in the Zijl River, near Leiden.
Read MoreLaunching lamp series 'Uit de gracht'. During the art route in Leiden on Saturday September 24 and Sunday September 25, light artist Mark Flipse will present the first lamps made from waste: 'uit de gracht' / 'from the canal'
Read MoreTogether with more than 50 cities and 11 countries, we are collecting as many cigarette butts as possible! We gather at 10 AM at the Beestenmarkt in Leiden and you can hand in the cigarette butts at our bridgehouse in Leiden, on the Marebrug.
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