Ahead of the pivotal UN climate conference in Brazil, a cohort of 300 mayors convened in Rio de Janeiro, pledging unified climate efforts to tackle the intensifying heat impacting their urban residents. Organized by the C40 network, the Monday summit underscored cities' crucial role in the global climate change battle.

UN special adviser Selwyn Hart hailed the mayors' leadership amid global geopolitical divisions. Hart emphasized the critical need for local leaders as the world intensifies efforts under the Paris Agreement to limit global warming to 1.5 degrees Celsius.

At the gathering, London Mayor Sadiq Khan criticized insufficient national actions, advocating cities as climate frontrunners. The newly launched Cool Cities Accelerator, backed by international foundations, aims to prepa

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