Damn censors.

The Daily Mail has a story about the possibility that there's still water on Mars.

I wanted to leave this comment:

I get that we can determine a liquid has recently flowed there, but how do we determine that it is water and not, say, ammonia or rubbing alcohol?

But their word-verification image doesn't make it past my library's filters. Damn.

I hate Big Brother.

[H/T 2 Drudge.]