The world edged a small step closer to the end of the fossil fuel era on Saturday, but not by nearly enough to stave off the ravages of climate breakdown.

Countries meeting in Brazil for two weeks could manage only a voluntary agreement to begin discussions on a roadmap to an eventual phase-out of fossil fuels, and they achieved this incremental progress only in the teeth of implacable opposition from oil-producing countries.

The talks were hauled back from the brink of collapse in an all-night session into Saturday morning, after a bitter standoff between a coalition of more than 80 developed and developing countries, and a group led by Saudi Arabia and its allies, and Russia.

There was disappointment from campaigners, but relief that the talks had produced at least some progress. De

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