France, Nov. 22 -- Extinction Rebellion said its activists released an environmentally harmless dye into canals, rivers, lakes and fountains in a total of 10 Italian cities to highlight "the massive effects of climate collapse".

Greta Thunberg was present at the "Stop Ecocide" protest in Venice, where demonstrators dressed entirely in red with veils over their faces walked slowly through curious crowds of tourists, images showed.

The green dye was also poured into the Po river in Turin, the Reno river in Bologna, the Tara river in Taranto, as well as fountains in Padova and Genoa, the activist group said.

Negotiations at key UN Cop30 climate talks in Brazil ran into overtime on Saturday with no agreement struck and delegates still lock...