BELEM, Brazil (AP) — 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.

"Drawing on our own journey from racial and ethnic division to democracy, South Africa is uniquely positioned to champion within the G20 a future of genuine solidarity, where shared prosperity bridges deep inequalities," Chrispin Phiri said in a statement to the BBC.