Donald Trump’s new term as US president poses a grave threat to the planet if it blows up the international effort to curb dangerous global heating, stunned climate experts have warned in the wake of his decisive election victory.

Trump’s return to the White House is widely expected to result in the US, yet again, exiting the Paris climate agreement and may even remove American involvement in the underpinning United Nations framework to deal with the climate crisis.

While campaigning for president, Trump has called climate change “a big hoax”, scorned wind energy and electric cars and vowed to gut environmental rules and the “green new scam” of the Inflation Reduction Act, a major bill passed by Democrats to support clean energy projects.