Researchers have documented an explosion of hate and misinformation on Twitter since the Tesla billionaire took over in October 2022 -- and now experts say communicating about climate science on the social network on which many of them rely is getting harder.

Policies aimed at curbing the deadly effects of climate change are accelerating, prompting a rise in what experts identify as organised resistance by opponents of climate reform.

Peter Gleick, a climate and water specialist with nearly 99,000 followers, announced on May 21 he would no longer post on the platform because it was amplifying racism and sexism.

While he is accustomed to "offensive, personal, ad hominem attacks, up to and including direct physical threats", he told AFP, "in the past few months, since the takeover and changes at Twitter, the amount, vituperativeness, and intensity of abuse has skyrocketed".