Tap water is not always safe to consume. So if you live in an area with poor tap water quality (or you simply prefer the taste of filtered water), you'll want to have a filtration system in place.

The extra 200 million years overlap with the era when the Martian surface became covered with water, the evidence for which has been gathered by several rovers sent by NASA.

Mysterious mounds on Mars were formed by ancient water, says a British study ... These actions played a key role in shaping the Martian landscape which divides the planet’s low-lying northern ...

Mysterious mounds on Mars were formed by ancient water, says a British study ... These actions played a key role in shaping the Martian landscape which divides the planet’s low-lying northern ...

These actions played a key role in shaping the Martian landscape which divides the planet’s low-lying northern hemisphere from its higher southern hemisphere. The mounds are made of layered deposits ...

Mysterious mounds on Mars were formed by ancient water, says a British study. Javascript is required for you to be able to read premium content. Please enable it in ...