US rejoins coalition to achieve 1.5C goal at UN climate talks

Exclusive: Boost for attempts to focus Glasgow Cop26 summit on limiting temperature rise

The US has rejoined the High Ambition Coalition at the UN climate talks, the group of developed and developing countries that ensured the 1.5C goal was a key plank of the Paris agreement.

The decision by the world's biggest economy and second biggest emitter, after China, to return to the High Ambition Coalition group of countries marks a significant boost to attempts to focus the Cop26 summit on limiting temperature rises to 1.5C, the tougher of the two goals of the Paris agreement.