President Trump’s first week in office included a flurry of executive orders with implications for Earth’s climate and environment.

What will 'resistance' look like this time around? Organizers say they'll be peaceful, but nothing is off the table.

The decisions that companies make about how much to grow oil production are first and foremost going to be determined by market signals.”

The United States will be one of only four countries outside the Paris Agreement, which is designed to reduce global greenhouse gas emissions.

From national security to home insurance, the president has quickly changed America’s climate adaptation policies in important ways.

There are 50 to 100 expected executive orders. Many will focus on boosting fossil fuels and reversing climate policy.

Trump calls climate change a hoax. But at the state level, the climate fight will continue — or even accelerate.

President Trump announced the withdrawal of the U.S. from the Paris Climate Agreement on Monday shortly after his inauguration, echoing a similar decision in his first term that was later reversed

After four years of U.S. progress on efforts to deal with climate change under Joe Biden, Donald Trump's return to the White House is swiftly swinging the pendulum in the opposite direction.

Some industry observers told ABC News that the ostensible softening toward Trump by big-tech corporations reflects a new business landscape that is both heavily influenced by the president-elect and increasingly defined by the development of energy-intensive artificial intelligence products.

Trump's picks to lead four federal agencies testified without the flashes of anger that marked Pete Hegseth and Pam Bondi's earlier showdowns.

While former President Joe Biden made climate change a hallmark of his administration and some of his policies remain, at least for now, Trump is quickly unraveling that.