Bullshit, Mr. A.C. Complete bullshit.
Go back and study your scientific method. Absence of evidence is not evidence of absence.
You can claim to be able to prove a negative, and know the unknown, and attack anyone who disagrees with you with ad hominems, but your words are only empty bluster.
You fall into a classic logical trap:
This is entirely different than the CO2 problem, which has been known, understood, and measured for a long time. Ask again in 150 years when you have a physical model built from fundamental principals and it might be as well understood as CO2 v. the greenhouse effect.
The stakes, in so far as an unintentional disruption of the food supply would lead to the ruin of civilization as we know it, are however just as dire.
And so the precautionary principal must prevail. This is all people ask for in both cases. And you call them unreasonable zealots who should be derided and held in contempt for doing so? Fuck you, the security of the food supply is too important and there is no shame in suggesting that it should be defended.