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 ...