The Webb telescope found that a far-off little red dot is the oldest known black hole, shrouded by gas that could help explain the ruby color.

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In The Martians, journalist David Baron recounts scientific and public debate over purported intelligent life on the Red Planet.

The hypothesis could extend the search for extraterrestrial life to include frigid planets with thin atmospheres and underground water.

A warming climate is behind growing floods of glacier meltwater in Alaska’s capital. Scientists say it’s the new normal.

Analysis of the hair used in a knotted device reveals the owner’s simple diet. That suggests commoners, not just the elite, kept records in Inca society.

Flu viruses often enter the body through mucous tissue in the nose. Researchers are developing new ways to protect such areas.

Sun-powered fliers could use photophoretic forces to hover in the mesosphere, gathering data from a region off limits to planes and balloons.

Women face a small rise in fracture risk within 10 years of stopping therapy, suggesting the need for additional monitoring.

Found in Splenda, sucralose reduces immunotherapy efficacy via its effects on the gut microbiome, but arginine supplements might counter the outcome.

In the lab, higher temperatures during fall migration led monarchs to break their reproductive pause, increasing their risk of death.

Golden apple snails can regrow full, functional eyes. Studying their genes may reveal how to repair human eye injuries.