In his first few weeks, President Trump has frozen climate spending, shaken up staffing at agencies like the E.P.A. and set off a wave of legal challenges.

The court ruled that the Trump administration had a narrowly defined path to withhold some funds to the city that had been approved by Congress.

Products must state if they contain chemicals tied to cancer or other risks. As a result, manufacturers have pulled back from using the chemicals, researchers found.

An intense storm could cause flooding and debris flows in areas burned by wildfires. Some residents have begun to evacuate.

If you’re scooping up a bouquet at the grocery store, here are a few things to consider.

The acting chair, Mark Uyeda, is directing the Securities and Exchange Commission to pause its legal defense of a rule requiring companies to make climate disclosures.

Since the inauguration, billionaires who funded climate action over the last decade have avoided criticizing Trump’s climate policies.

The executive, Jim Farley, said President Trump’s tariff and auto policies would raise costs and could force the automaker to cut jobs.

The energy giant was vague on details, but analysts say the changes is likely to include less spending on renewable sources and a bigger investment in oil and natural gas production.

Staff members search for spending on “climate science,” “climate crisis” and “pollution” as one of the world’s premier climate research agencies girds for cuts.

The 10 percent tariff the president said he might impose in March could cause U.S. refineries to cut production and lead to higher prices.

Aid projects were designed to help Central Americans withstand extreme weather at home. Their end could undercut Trump’s goal of reducing migration.

President Trump tangled with its forecasters during his first term. As he slashes government spending, many wonder what that means for weather data.

Some have halted work on the Biden-era $5 billion program to build E.V. charging stations. Others plan to keep building. Most are confused.

The move would run counter to a Biden administration push to cut back on single-use plastic, which was considered a milestone.

The central bank has halted hiring to align with a White House directive and pulled back its work on climate change.

Emboldened by President Trump, West Virginia and other states are challenging the Climate Change Superfund Act, which makes corporate polluters pay for past emissions.

President Trump is expected to close the office as he cuts programs to help poor and minority communities that are disproportionately affected by pollution.

The Oscar-winning filmmaker Alex Gibney has sold a majority stake in his Jigsaw Productions to the philanthropist Wendy Schmidt.

By using a fiber-optic cable to detect tiny vibrations a mile below the surface, scientists discovered a surprising way that ice sheets move.