Elon Musk was once an environmental hero: is he still a rare green billionaire?

Renowned for clean-energy tech, the billionaire seems to be at one now with super-emitters and far-right global climate deniers

Elon Musk was once lauded as a sort of green Tony Stark - the genius inventor who leads a double life as superhero Iron Man - for single-handedly tackling the climate crisis one Tesla at a time, helping to forge a clean energy future and pushing for new taxes to drive down fossil fuel use.

But the climate credentials of the world's richest person have become clouded by his embrace of rightwing politicians, some of whom dismiss global heating, as well as by his management of X, formerly known as Twitter, during which many climate scientists have fled the platform amid a proliferation of misinformation about the climate crisis.