After Venice's Grand Canal turned green, investigation opened into why
Prolonged low tides in Italy see smaller canals dry up in Venice
Venice's waters turn fluorescent green due to unknown substance
Venice police investigate source of bright green liquid in Grand
Italian climate change protesters turn Venice's Grand Canal green
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Venice canals to have speed cameras after spate of accidents
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Italian climate change protesters turn Venice's Grand Canal green
Mysterious! Parts of Venice canal turn fluorescent green, locals
Why Venice Canal's Water is Turning Bright Green
Authorities Reveal Why Venice's Canals Turned Green