NYT Science

Public health advocates worry that Donald Trump could unravel federal clean water efforts, including restrictions on lead pipes and chemicals known as PFAS.

A second Trump administration could alter the lives of all sorts of animals, whether they live in laboratories, zoos, fields or forests.

President-elect Donald J. Trump joined Elon Musk, as his company’s prototype moon and Mars rocket carried out a sixth test flight that showed a mix of progress and setbacks.

Iran has raised the possibility it would stop expanding its stockpile of uranium enriched to a purity of 60 percent — very close to the level needed for a weapon, the U.N.’s nuclear watchdog says.

Journals had retracted papers on superconductors that worked at room temperature and materials science that involved Ranga Dias.

If he is confirmed as H.H.S. secretary, the longtime vaccine critic would be in a position to change the government’s immunization recommendations and delay the development of new vaccines.

An analysis of newly released 19th-century census records offers more insight into the conflict’s costs.

Some women are stocking up on the medications, saying they are concerned that the new administration could take steps to restrict access.

As the glaciers of South America retreat, the supply of freshwater is dwindling and its quality is getting worse.

The ruling found that two state laws — one barring use of abortion pills, and one banning all forms of abortion — violated the state Constitution’s “fundamental right to make health care decisions.”

A rise in the disease in younger people was not followed by an increase in deaths, a study found, and might be a sign of overdiagnosis.

An independent researcher found that noise recorded miles away from the site of a recent test flight was equal to standing 200 feet from a Boeing 747 during takeoff.

The president-elect’s decision to witness the liftoff is another example of his close ties to the world’s wealthiest entrepreneur.

At Dartmouth, long before the days of laptops and smartphones, he worked to give more students access to computers. That work helped propel generations into a new world.

The Homotherium cub was preserved in Siberian permafrost with its dark fur and flesh intact.

Senior ministers are arriving in an effort to break a deadlock over the summit’s main goal: funding to help lower-income countries hit hard by global warming.

The unidentified patient had recently returned from Africa, where the virus has caused a deadly epidemic, health officials said.

Processed foods are in the cross hairs of Robert F. Kennedy Jr., but battling major companies could collide with President-elect Donald J. Trump’s corporate-friendly goals.

A small study found ChatGPT outdid human physicians when assessing medical case histories, even when those doctors were using a chatbot.

For a century, exoplanet hunters have “discovered” planets around a nearby star, only to retract the claims. But the latest find is for real.