Older adults with lower bone density showed faster cognitive decline and more white matter change over five years.

A new egg-eater snake species from Ethiopia's Harenna Forest looks just like a common relative - except it's lost the ability ...

Scientists identified the first new wild cat species in a over century. Leopardus tilcayo is smaller than a house cat.

A new stress-sensing contact lens measures serotonin in tears, offering a potential way to monitor changes in body chemistry ...

Juno has revealed an unexpectedly complex system of plasma waves and shock structures that helps Jupiter slow the solar wind.

Eating more whole grains could improve cholesterol and blood pressure. But how much should you eat to see the greatest benefits?

Three decades of supernova observations are adding to hints that dark energy may be changing over cosmic time.

NASA scientists found that Earth's center of mass wanders only about half as far each year as previously thought — and ...

A 40-year study reveals a surprising connection between body weight during adolescence and biological aging decades later.

Building fairness into climate models could reshape who cuts emissions, who pays, and how countries reach the same global climate goals.

People exposed to less sugar during the first 1,000 days of life had lower rates of anxiety diagnosis decades later.

Astronomers found a Neptune-sized planet orbiting backwards around its star, but the usual explanation for its bizarre path is nowhere to be found.