Anthony Albanese has called for deeper global co-operation to cut emissions and warned against growing authoritarianism in a stark follow-up to Donald Trump's isolationist, climate change-denying speech.

In a wide-ranging debut before the United Nations General Assembly on Thursday (AEST), Australia's prime minister urged an overhaul of the maligned multinational institution to prevent a further loss of trust.

His appeal for greater international co-operation followed a fiery speech from the US president in which he lambasted nations such as Australia that had recognised Palestinian statehood.

Mr Trump called climate change a "green scam" and the "greatest con job ever perpetrated on the world".

Amid increasing US isolationism, Mr Albanese revived Australia's push for a seat at the UN

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