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

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.

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

The announcement echoed Trump's actions in 2017, when he announced that the U.S. would abandon the global Paris accord.

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

In his first day as the 47th U.S. president, Donald Trump took action to reverse many of the Biden administration's efforts to move the country toward a green-energy economy.

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.

Donald Trump's team made quick work of taking down web pages about the founding documents and information about former U.S. presidents.

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

WASHINGTON – President-elect Donald Trump planned to sign dozens of executive orders Monday in a sweeping move to reimagine the country's relationship with immigration, its economy, the environment and even gender roles.

President Donald Trump will once again withdraw the United States from the Paris climate deal, the White House said on Monday, removing the world's biggest historic emitter from global efforts to fight climate change for the second time in a decade.