In a sentence the Washington Post provides an excellent summary of how President Joe Biden will immediately take aggressive action to face the world’s climate crisis. It reads:
Biden’s push includes blocking the Keystone XL pipeline, restarting climate diplomacy and shifting the nation away from fossil fuels
The story adds:
During his first moments in the Oval Office on Wednesday, President Biden returned the United States to the Paris climate accord and directed federal agencies to begin unraveling Donald Trump’s environmental policies…
Here is another Washington Post story with a list of pending climate related reversals of Trump policy.