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

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

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

"Earth can no longer sustain the development model based on the intensive use of fossil fuels that has prevailed over the past 200 years," he said in Belem, where an annual UN

It comes two years after the world's nations agreed to "transition away from fossil fuel

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