Crop circles and crossovers!
I am not a skeptic about crop circles....I do not think they are ALL manmade. The ones that contain anomalies that so far have not been duplicated by humans, are, imo, more likely to be of alien origins.
Since I do not see how humans can make these large complex designs in one night without leaving ANY evidence behind (over and over again)....makes me lean toward ET.
I think that firsthand investigating is just as good as having some kind of "academic
credentials". People can be book smart and still not possess enough common sense to come in out of the rain sometimes!!! So, I do not put a lot of faith in having a degree as that is not always as impressive as many seem to think.
"Light travels faster than sound. That is why some people appear bright until you hear them speak."
Larry the Cable Guy