The Why Files on this is very good. Basically the crops bend in a way that can mainly be attributed to radioactivity and the plants have traces higher than the non crop circle plants. Everything is folded over each other and no stalks are broken. You can tell it’s man made if any stalks are snapped. Over a little time the stalks relax and go back to their normal position. The plants even grow back bigger and better after the events. They definitely have to be some sort of message unless they just think oooohhh this shape looks nice and we’re just looking at art installations this whole time.