Saying that 'humanity has opened the gates of hell,' UN Secretary General Antonio Guterres called for an end to subsidies for fossil fuels worldwide and a phaseout of all coal-fired generation in well-off countries by 2030.

Gov. Gavin Newsom and Canada Prime Minister Justin Trudeau signed an agreement committing their governments to cooperate on a range of climate issues.

President Biden, Canadian Prime Minister Justin Trudeau and EU President Ursula von der Leyen pledged they would lead a global methane reduction effort.