Martian kitties

Scientist have found Ammonia on Mars.. “There are two possible sources: either active volcanoes,
none of which have been found yet on Mars, or microbes.”

Ok.. Have they thought it could be cats? You know the Mars surface could be one HUGE litter box.
and we all know what happens when the litter doesn’t get changed!

http://news.bbc.co.uk/1/hi/sci/tech/3896335.stm