On his first day back in office as United States president, Donald Trump gave formal notice of his nation's exit from the Paris Agreement—a vital global treaty seeking to rein in climate change.

President Donald Trump on his first day in office again withdrew the U.S. from a landmark global pact to fight climate change. So what is the Paris Agreement? And what happens to it now?

Trump’s day-one actions on energy come as climate change-fueled fires ravage Southern California, following the globe’s hottest year on record.

The Paris agreement is complex and works in a slow bureaucratic manner. It’s a mostly voluntary climate pact originally written in ways that would both try to reduce a worsening climate change problem and withstand the changing political winds in the United States.

Various European leaders reacted to President Donald Trump's withdrawal from the Paris Agreement saying that they will stick to the landmark Paris climate agreement even though the United States has withdrawn from it.

President Donald Trump pulled the US out of the Paris Agreement. The stakes couldn’t be higher for the planet and our ability to adapt.

Exiting the Paris agreement “is in clear defiance of scientific realities and shows an administration cruelly indifferent to the harsh climate change impacts that people in the

President Donald Trump said Monday he will again withdraw the United States from the landmark Paris climate agreement, dealing a blow to worldwide efforts to combat global warming and once again distancing the U.S. from its closest allies.

With the US out of the tent, the rest of the world can get on with climate action without Trump’s corrosive influence.

Trump declared a "national energy emergency" among several executive actions to carry out his long-promised "drill, baby, drill" agenda.

His day-one declarations aim to cripple clean energy, boost major polluters, and undermine actions meant to safeguard humanity.