Donald Trump’s return to the White House will have a hugely negative effect on climate change action in the short-term but the longer term impact is less certain, experts say.

With world leaders meeting next week for the latest UN climate talks, COP29, the Trump victory will be seen as a huge roadblock to progress in both cutting emissions and raising cash for developing countries.

The US president-elect is a known climate sceptic who has called efforts to boost green energy a “scam”.

But with renewable energy gaining a strong foothold in the US and popular support for wind and solar, Trump’s efforts to ramp up oil and gas instead may be less effective.