These star-shredding black holes sit within dusty galaxies that block many telescopes’ views. That’s not an issue for JWST.

A trove of fossils, including a penis worm with a spiked, invertible throat, suggests this spot may have been a cradle of Cambrian evolution.

Routine tests in the third trimester may catch missed cases and flag the need for treatment that reduces a baby‘s risk of getting HIV to near zero.

Megaflash hot spots include the U.S. Midwest and southeastern South America, site of the previous record-holder, a 709-kilometer-long bolt over parts of Brazil and Argentina. That lightning still ...

Geologists unpack why the magnitude 8.8 temblor — the sixth largest ever recorded — fomented waves that reached Japan and Hawaii but caused little damage.

A leftover from microbes’ meals is linked to early heart disease in people. In mice, it contributed to plaque buildup in the arteries.

Studies suggest that people who had seasonal flus or vaccinations have low antibody levels against H5N1 bird flu.

An infinity symbol–shaped galaxy hosts an active supermassive black hole. The growing giant may have come from the aftermath of a galactic smashup.

Research based on game theory suggests if we program AI agents with a sense of guilt, they could behave more cooperatively, much like humans do.

“It feels lovely for [the] first 15 minutes, especially in winter,” Rykaczewski says. “After about two hours, it becomes [a] bit, well, sweaty.” ...

Seeing sick-looking faces in virtual reality triggers brain circuit changes related to threat detection and boosts activity of certain immune cells.

Dropping vaccination rates and changes in U.S. vaccine policy have public health experts concerned that annual measles outbreaks could become more frequent.