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.

Researchers found crocodilians, bats, raccoons and other creatures prowling a Florida town’s storm drains, “like something out of ‘Teenage Mutant Ninja Turtles,’” one said.

As of Tuesday, 22 children and two adults had been infected, all of whom were unvaccinated, local officials said.

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.

It is the first ruling in a case challenging “shield laws” intended to protect doctors in states that support abortion rights who send abortion pills to states with bans.

The case could lead to a battle in federal court over whether states that support abortion rights can protect doctors who provide abortion services.

The findings showed the highest mortality occurred among infants who were Black, lived in Southern states or had fetal birth defects.

An intense storm caused flooding and forced evacuations in areas burned by wildfires.

The vets had no symptoms, and one worked only in states where no dairy infections had been reported.

Startup Canaery is partnering with a US Department of Energy lab to develop neural implants for rats and dogs that are capable of decoding what they smell.

There is a 2 percent chance that seven years from now, “the city destroyer” will hit Earth with the force of an 8-megaton nuclear weapon. Here are its possible impact points.

It’s the most energetic particle of its kind ever discovered, and scientists have no idea where it came from.

The always colorful males light up with biofluorescence, sending off signals.

Health experts see his retreat from international cooperation as disrupting the safe-keepers of one of the world’s deadliest pathogens.

Filters in water pitchers or under-sink systems capture dangerous chemicals, only for them to be returned to the environment. A researcher from North Carolina is pioneering a new system that could get rid of forever chemicals forever.

Beyond treating diabetes and helping people lose weight, GLP-1s may also improve libido. But the reasons are as complex as desire itself.

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

Beginning in 1969, she spent five months a year on Great Gull Island, leading teams of young volunteers devoted to preserving the seabirds.

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.