NASA announcement

[SS4 Gogeta]

http://www.nasa.gov/topics/universe/features/astrobiology_toxic_chemical.html

Well this could change things

 

[Sicron]

It's about time they started believing that water needn't be the only resource for life.

 

[Synth]

We thought everything had to be carbon, oxygen, and/or nitrogren based.

I wonder what can compound with arsenic to create complex life?

 

[Zeonix]

It's about time they started believing that water needn't be the only resource for life.

....they found it in a lake.

 

[Spunky]

It only feeds on arsenic when there's no phosphorus to be found, suggesting it may have evolved to process phosphorus, which it does more efficiently.