King Charles urges 'genuine' climate action at COP28

King Charles III told world leaders Friday that the UN's COP28 talks in Dubai must be a turning point in the fight against climate change, as tough negotiations on fossil fuels began.

King Charles kicked off two days of speeches by heads of state and government in the oil-rich United Arab Emirates, with a stark warning.

"We are carrying out a vast, frightening experiment... all at once, at a pace that far outstrips nature's ability to cope," he said.

"I pray with all my heart that COP28 will be another critical turning point towards genuine transformational action," added the king, a lifelong environmentalist.

The sense of urgency was heightened by a UN warning Thursday that 2023 is on track to become the hottest year on record, raising fears the world will not meet the goal of limiting warming to 1.5 degrees Celsius.

Brazilian President Luiz Inacio Lula da Silva hammered home the point, saying: "The planet is fed up with unfulfilled climate agreements."

More than 170 world leaders are due at COP28, but Chinese President Xi Jinping and US President Joe Biden -- whose countries are the world's biggest polluters -- are absent.

One by one, leaders acknowledged the threat posed by climate change, but most repeated existing pledges.

Developing nations spoke of the disproportionate impact of global warming on their people and urged wealthier nations to honour unfulfilled promises to deliver climate funding.

"Despite the fact that India is home to 17 percent of the world's population, our share of global carbon emissions is even less than four percent," Indian Prime Minister Narendra Modi said.

Chinese Vice Premier Ding Xuexiang said developed nations "should substantially scale up their support for...