Supposedly the press conference will happen in a few minutes. TV stream:

http://www.nasa.gov/multimedia/nasatv/index.html

No! No alien life has been found, get it out of your puny little brains! 

Microbes that consume arsenic instead of phosphorous?

Fuck you, NASA.

http://www.bbc.co.uk/news/science-environment-11886943

EDIT: Or am I missing something, and we just happen to be getting two pieces of astrobiological news in one day?

Whatever it is needs to die! Could be a threat to human civilization. 

Arsenic incorporating microbes mean life is indeed more flexible than the "classical" view. It's a god sign if you want to find more life, but I suppose it could make narowing things down harder.

An microbe which, when deprived of phosphorous, incorporates arsenic into its DNA is a threat to human civilisation?

So are the aliens coming or what?

They're coming to poison you with arsenic!

We need to genetically enginner ourselves with their arsenic thing. If we become invulnerable to the worst of poinsons, then obviously we'll be immortal.

Lol its a joke kid. And I didn't know its was microbes or whatever, i thought they meant a significant species.