Cuban brown anoles have the highest blood lead levels of any vertebrate known — three times that of the previous record holder, the Nile crocodile.

On Mars, the Perseverance rover found a spotted rock that could bear signs of ancient life. On Earth, a researcher used a lookalike for a dry run.

In late August 2005, Hurricane Katrina devastated the U.S. Gulf Coast. The storm cut a deadly swath through Louisiana, Mississippi and Alabama, deluging coastal towns as surges of ocean water swept ...

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

Sporting the world’s largest digital camera, the new telescope is poised to help solve some of the universe’s biggest mysteries.

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

The genetically modified lung remained viable for nine days, but the recipient’s immune responses need more research, scientists say.

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.

Researchers warn that halting federal contracts for mRNA vaccine research could weaken pandemic preparedness and slow medical advances.

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

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

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