Quote Originally Posted by Eric the Half a Bee View Post
Except this water was poisonous to the lifeforms that lived on there. They preferred an alternative, yet undiscovered drink. Water killed off everything there.

Obviously I'm making all of that up. I do find it interesting that, so often, scientists say that water is proof of life on a planet. No it isn't. Water is proof of water on a planet. What's to say there are alien lifeforms out there who live on entirely different, probably undiscovered elements and substances?
No scientist has ever said water is proof of life on a planet.