Severe flooding in Venice that has left much of the Italian city under water is a direct result of climate change, the mayor says.
The highest water levels in the region in more than 50 years would leave "a permanent mark", Venice Mayor Luigi Brugnaro tweeted.
"Now the government must listen," he added. "These are the effects of climate change... the costs will be high."
Images showed popular sites left completely flooded and people wading through the streets as Venice was hit by a storm.
St Mark's Square - one of the lowest parts of the city - was one of the worst hit areas.
