Biden’s big climate pledge: can it succeed, and what noticeable changes could it bring?

Joe Biden has closed out a two-day climate summit of more than 40 world leaders by warning that the planet risks reaching the “point of no return” if more isn’t done to escalate efforts to constrain the climate crisis.

Biden, along with several other national leaders, made a number of new promises in the summit. Here’s what it all means.

What has Joe Biden promised at the summit?

As its centerpiece announcement, the Biden administration has said planet-heating emissions will be cut by . The target was officially submitted to the United Nations as part of an