Antonio Guterres

Opposing countries are refusing to budge as this year's crunch climate talks draw towards their final day, despite surge of ambitious pledges from businesses

As summit gets underway, UN chief Antonio Guterres issues climate warning to nations as top US Democrat Pelosi offers 'iron-clad' optimism

Antonio Guterres issues stark warning as latest talks in Madrid get underway with news Mark Carney is to take up key climate role

The best soundbites from politicians, activists and business leaders in New York

Despite some 'bright spots' and encouraging progress from business groups, leaders at yesterday's summit 'did not deliver' on expectations, say campaigners

Swedish teenage activist delivers angry and emotional speech to world leaders at UN Climate Action Summit, as emissions pledges start to stack up

"Don't come to the summit with beautiful speeches - come with concrete plans," the UN Secretary-General told world leaders

Outlets around the world including The Guardian, CBS News, and The Huffington Post are to deliver a week of climate crisis coverage to coincide with September UN summit

Andersen takes up the role following Erik Solheim's resignation last year

UN chief Antonio Guterres tells Associated Press countries should stop building new coal from next year or face 'total disaster'