From The Gambia to the US, sea salt is increasingly seeping into the freshwaters people need for drinking and producing food.

Some bacterial species possess an astonishing ability: They use Earth's magnetic field to orient themselves. To better ...

A new study analyzes three asteroid and two meteorite samples to see if space rocks smacking into Earth could’ve helped ...

With an estimated 6 sextillion kilograms of the stuff—that’s 21 zeroes by the way—the Earth’s core is another example of why hydrogen is the most abundant element in the universe.

The comet is now racing away from the sun following a close flyby on Jan. 20.

Alysa Liu, the most caring, carefree, selfless, happy and optimistic skater in the women’s competition at the Olympics, won ...

On Jan. 31, 1958, Explorer 1 became the first satellite launched by the United States. Its primary science instrument, a cosmic ray detector, was designed to measure the radiation environment in Earth ...

In the whole history of Earth's climate, few events are as extreme as those that geologists call "Snowball Earth." ...

It may become impossible to fix ...

The Earth's magnetic field and oxygen evolved together over 540 million years, according to a major NASA study.

After accounting for Earth’s rotation, gravity is slightly weaker beneath Antarctica than anywhere else on the planet. That ...

"We don’t know where they are,” said NASA’s planetary defense officer Kelly Fast at the AAAS conference in Arizona this week.