At UN climate summit, world leaders warn time running out to curb climate change

World leaders warned Thursday that time is running short for urgent and decisive action to prevent the worst effects of climate change, and blasted the United States for its retreat from those efforts, as they gathered at the edge of Brazil's Amazon rainforest for the annual United Nations climate summit.

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UN Secretary-General António Guterres opened a gathering of heads of state in Belem, Brazil, with harsh words for world powers who he said "remain captive to the fossil fuel interests, rather than protecting the public interest."

Allowing global warming to exceed the key benchmark of 1.5 degrees Celsius (2.7 Fahrenheit), laid out in the Paris Agreement, would represent a "moral failure and deadly negligence," Guterres said, warning that "even a temporary overshoot will have dramatic consequences ... every fraction of a degree higher means more hunger, displacement and loss."