Possible... But we know from a previous pesticide problem - DDT - just how disastrous a single chemical can be. And that was in the seventies: Big Ag has only g

Possible... But we know from a previous pesticide problem - DDT - just how disastrous a single chemical can be. And that was in the seventies: Big Ag has only gotten bigger since. I think agriculture has to be treated as the main cause unless definitive evidence to the contrary is produced. (And at the scales we're talking about, that evidence should be pretty easy to turn up, if it exists...)