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

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

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 Colorado River basin has lost a Lake Mead’s worth of water in the last 20 years — and scientists say we’re passing a "critical point" where pumping groundwater will become too expensive.

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

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 ...