President Joe Biden is about host 40 leaders on a climate change summit, in the White House.

The summit which will be virtual is an attempt for the US to re-assert its global leadership.

Talking about climate change, which is now a global topic, It is expected that the US will unveil an updated carbon pledge that will see its emissions nearly halved by 2030.

Before the meeting takes place, officials urged greater ambition on countries perceived as laggards on climate.

An official who made reference to Australia, said “there would have to be a shift” in their approach.

In the early days of his administration President Biden made climate change a key focus.

As well as re-joining the Paris climate agreement on his first day in office, he announced early on that he would gather around 40 world leaders for a global summit on Earth Day – 22 April.

Amongst those that will attend the summit is UK Prime Minister, Boris Johnson, who is expected to tell leaders that 2021 is the year countries need to “get serious” about tackling climate change.

Meanwhile, the hosting opportunity for the crucial COP 26 summit in November, this year, has gone to the UK.