They have been searching for evidence using a complex sound system to listen for radio waves from extra terrestrial intelligence.
SETI (Search for Extra-Terrestrial Intelligence) is the name for the private program (privately funded and operated) searching for evidence of extraterrestrial life. Contrary to popular belief and assumption, NASA has nothing to do with the SETI project.
The moon
It's very unlikely.
Platyrrhines
Because there is no evidence to suggest that it will
There is no clear evidence of such a landing. So the answer is NEVER.
Mars
The numbers of craters they have counted on the surface.
Intelligence is merely a property of some lifeforms. It has no direct relationship to evolution and can say nothing either way, although the apparent development of intelligence combined with otehr mechanisms (e.g. suitability, usefulness) may be considered evidence.
Police operational intelligence is not a term that is used very often. Police operational intelligence is a term used by undercover officers that collect evidence.
There is some evidence that we do, but that is farfrom the whole picture.
twin studies.