Low iron levels can flip the genetic switch on a mouse's sex during development, causing XY embryos to grow female features.

Earth's magnetic field and oxygen levels have increased more or less in parallel over the past 540 million years, suggesting ...

Researchers armed with the Hubble Space Telescope have revealed that some of Uranus' largest moons have one side brighter ...

Space weather experts warn that a "moderate" geomagnetic storm could rock Earth over the weekend, potentially lighting the ...

Breathing patterns among humans are so unique that they can work as an identification tool, scientists report. They propose ...

The Zanj, enslaved people largely from Africa, rebelled at the same time they were ordered to build a massive system of ...

A new proof-of-concept study explored the feasibility of tracking the evolution of superbug infections in real time to help ...

In patients showing cognitive decline, a new blood test for Alzheimer's is expected to make diagnosis more convenient, ...

NASA's Chandra X-ray Observatory has captured a striking image of a distant quasar from the "cosmic noon," including a giant ...

Activity levels in a specific region of the brain predict whether we think something is real, irrespective of whether we've ...

Symptoms of Werner syndrome, which causes premature aging, can appear in a person's teens and progress quickly in their 20s ...

Small clusters of pits in tooth enamel may be traced back to a single evolutionary lineage millions of years ago.