Scientists are confident Mars was once abundant with water, as seen in massive flood-carved channels, ancient river valleys, ...

Like straight out of Julio Verne's Journey to the Center of the Earth, scientists from Northwestern University and the ...

As researchers continue to study this hidden water and its effects on the planet, we may uncover even more secrets about how ...

Clouds are reflecting less sunlight, trapping heat, and rapidly accelerating global warming beyond predictions.

Earth's innermost layer is called the core ... "Goldilocks zone," where the temperature is just right for liquid water to exist on the surface. Our planet's atmosphere is mostly made of nitrogen.

More than 3 billion years ago, Mars intermittently had liquid water on its surface. After the planet lost much of its ...

Study discovered that tiny electrical sparks, called microlightning, form when water droplets collide. These can create ...

"Given how rare such evidence is due to [Earth's] geological recycling processes, this is a major breakthrough in ...