Global warming deal hopes revived after Cancun agreement

More than 190 countries have struck an agreement at the latest round of UN climate talks that puts efforts to secure a new international deal to tackle global warming back on track.

The talks in Cancun, Mexico, were the latest attempt to make progress towards a new global deal on tackling climate change, after last year’s meeting in Copenhagen failed amid chaotic scenes to secure a new legally-binding treaty on cutting emissions, instead delivering only a weak voluntary accord.