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A recent cold appears to be a defense against COVID-19 and a partial explanation for kids' tendency toward milder coronavirus infections.

Mice treated with the protein, which is found in bacteria, quickly eliminated carbon monoxide from their body in their pee.

In a first, astronomers imaged a baby planet within a gap in the disk of material around a star, confirming predictions about how rings form.

To make horses rideable during domestication, people may have inadvertently targeted a mutation in horses to strengthen their backs and their balance.

Levels of hydrogen sulfide gas soared near a raging section of the Tijuana River in San Diego, exposing residents to potentially harmful air pollution.

Hurricane forecasts have improved since Katrina, but risks from climate change and budget cuts loom.

Scientists report that targeting sugars on virus surfaces stopped multiple infections, though the approach needs much refinement before human trials.

Beans matter, but microbes may be the real secret to fine chocolate flavor. Scientists are building starter cultures that may improve quality.

Recovering these metals from mining by-products destined for waste sites could offset the need to import them from elsewhere or open new mines.

Immune cells in aging cat brains with amyloid beta destroy nerve endings, mimicking the progression of Alzheimer's disease in humans.