Activists say the climate agreement effectively signed away the 1.5-degree Celsius target—"our only real chance to safeguard humanity’s future.”

We are less than halfway through Cop29, the world’s foremost climate conference, but Prof Johan Rockström is not hopeful for a positive outcome. “No longer fit for purpose” is how he and a number of other leading experts have described the talks,

The world approved a bitterly negotiated climate deal Sunday but poorer nations most at the mercy of worsening disasters dismissed a $300 billion a year pledge from wealthy historic polluters