The UN Secretary-General, António Guterres (pictured), took the stage at the December 2 World Leaders Forum at Columbia University in New York and delivered what some have said was the important address of the year, if not ever.

Mr Guterres again warned the world about the seriousness of the climate crisis, pointing out that if people truly cared about their fellows they would act now to do all they could to mitigate the causes of this quickly unfolding crisis.

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