French Foreign Minister Laurent Fabius hopes to secure a sweeping agreement to curb rising greenhouse gas emissions within hours. If that fails, the talks could run into Sunday.

A source in the French government confirmed that negotiators came up with a new draft, and that it was being translated into the United Nations' six official languages before ministers gather to consider it for adoption.

Officials from 195 nations have been seeking to resolve the final sticking points, none seemingly insurmountable: the phrasing of a goal for phasing out carbon emissions later this century; the frequency of further negotiations meant to encourage even faster action.

If successful, it will be a powerful symbol to world citizens and a signal to investors - for the first time in more than two decades, the world will have a common vision for cutting back on the greenhouse gas emissions blamed for overheating the planet, and a roadmap for ending two centuries of fossil fuel dominance.

A deal in Paris would mark a legacy-defining achievement for US President Barack Obama, who has warned not to condemn our children to a planet beyond their capacity to repair and puts to rest the previous climate summit in Copenhagen six years ago, when attempts to agree even deeper carbon curbs failed.

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