Presence of high-polluting companies erodes trust in the UN process, say campaigners.

After MEPs voted to gut Europe’s flagship climate transparency law, concerns are mounting that the Big Four will dominate and dilute corporate sustainability audits.

Doctors and models extol the virtues of meat as climate impacts of industrial farming face scrutiny at COP30 — the global climate summit.

Their access to the summit is proof that Big Oil still holds "a dangerous sway" over the climate process, campaigners say.