Women with dense breasts are at higher risk of breast cancer and are underdiagnosed, but other factors also play an important role

Red dwarfs are dim bulbs but host more Earth-like planets than any other kind of star

A new shape called an einstein has taken the math world by storm. The craggy, hat-shaped tile can cover an infinite plane with patterns that never repeat.

As atmospheric temperatures rise with climate change, baseballs can travel farther through the air, allowing for more home runs

A candidate “rogue” supermassive black hole may weigh as much as 20 million suns and has sparked a trail of star formation that is 200,000 light-years long

With an April 7 court decision, one judge has harmed women’s health and undermined trust in science-based drug approvals in the U.S.

At an American Mathematical Society meeting, high school students presented a proof of the Pythagorean theorem that used trigonometry—an approach that some once considered impossible

A step-by-step look at how these drugs end pregnancy

A recent Food and Drug Administration decision that makes naloxone available without a prescription may increase the drug’s accessibility. But cost could be a barrier

Killer whales rip open the bellies of sharks to snag the liver. Other predators also have dietary preferences for organs, brains and additional rich body parts

A judge’s bad decision about the abortion pill rests on stigma about abortion that harms health care

Sea levels off the southeastern U.S. have risen more than a centimeter a year over the past decade—about triple the global average—and the effects on communities near the Gulf of Mexico and Atlantic Ocean already are being observed

After the Supreme Court overturned Roe v. Wade , physical and legal attacks against clinics that provide abortions have increased

A careful new study reveals coffee is generally safe for your heart and may boost your daily step count.

Recently released data from samples of the COVID-causing virus SARS-CoV-2 at the market where many early cases of the disease occurred suggest animals were present but stop short of proving that they were infected and transmitted the virus to humans

A new material was used in a simple snail robot, but it could one day make artificial nervous systems for more complex machines

A federal judge in Texas ruled to withdraw the Food and Drug Administration’s approval of the abortion drug mifepristone, potentially making medication abortion less accessible nationwide

Design, context and timing influence whether humans embrace a robot or reject it

The Environmental Protection Agency has released draft regulations that set the stage for a huge transition to electric vehicles

We now know that the first galaxies in our universe formed shockingly fast, thanks to the latest results from the James Webb Space Telescope