Brazil's President Luiz Inacio Lula da Silva said Friday that Earth can no longer sustain humanity's dependence on fossil fuels, and warned the climate fight could be lost without a rapid transition to cleaner energy.

The leftist leader spoke at a summit in the Brazilian Amazon where heads of state and government implored nations to start weaning themselves off the coal, oil and gas responsible for most planet-warming emissions.

Evidence of dangerous warming has never been clearer: the last decade has been the hottest on record, marked by intensifying hurricanes, heatwaves and wildfires.

Lula said tackling the urgent question over the future of energy would determine "success or failure in the battle against climate change."

"Earth can no longer sustain the development model based on t

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