Gotta be something out there Doc, but what or where, will we ever know,? the way this mortal coil is going it can only be better cos it can't be any worse can it.
I would say it is prodigiously unlikely. Loads of stuff on google, but it has been shown that the chances of life forming by accident from the primitive molecules in the swamp are astronomically against, so for it to happen twice or more, fantastic beyond comprehension.
I think the probability of life being found elsewhere is very high. I'm just not sure what form it will take..........and I'm not convinced that sending out radio messages is the way to go about contacting them..........they might not listen to the radio !
There may well be life on Mars, but if our scientists are busy looking for carbon-based bi-peds I reckon they'll miss whatever life-form has developed in that specific atmosphere and conditions.