World leaders agree more “immediate, concrete and cooperative actions” are necessary to limit global temperatures from rising beyond 2 degrees Celsius, United Nations Secretary-General Ban Ki-moon said.

Speaking at a joint press conference with Ban in New York, French President Francois Hollande hinted that countries may pledge additional climate aid beyond the $10 billion that has already been announced.

Hollande added that a final climate agreement slated to be reached in Paris this December must have flexibility, saying it must include a five-year review mechanism for national pledges on limiting greenhouse gas emissions.

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