Joe Biden to reveal US emissions pledge in key climate crisis moment

President will also call on major economies to join him in bold action at virtual summit of 40 world leaders

• So what has the rest of the world promised to do about climate change?

Joe Biden faces a key test of his commitment to climate action this week, when he sets out his core plans for tackling the climate crisis and calls on all of the world's major economies to join him in bold action to slash greenhouse gas emissions in the next ten years.

The US president has made the climate emergency one of his administration's top priorities, and stated that clean growth must be the route for the US to rebound from the coronavirus crisis.