Scientists reveal water formed soon after the first supernova explosions, suggesting life-friendly conditions existed earlier ...

Life may not have begun with a dramatic lightning strike into the ocean but from many smaller "microlightning" exchanges ...

Next to it, a much smaller sphere shows the world's liquid fresh water. This image shows blue spheres representing relative amounts of Earth's water in comparison to the size of the Earth.

Here on Earth, we tend to take showers for granted. But for astronauts stationed in space, taking a quick rinse—much like cooking, eating, using the toilet, and just about every other mundane, ...