I heard yesterday that a study had come out showing that organic fruits and vegetables are not significantly safer to eat than conventionally-grown ones. It sounded a little counter-intuitive. But I didn’t have time to follow up on it before I found this article on my electronic doorstep this morning. Its analysis is perhaps a useful innoculant against whatever storm of advertising develops from the pesticide industry.
EWG (The Environmental Working Group) has long been providing a helpful guide to pesticides in produce: http://www.ewg.org/foodnews/. The fact that the USDA finds 57 different pesticides in celery adds weight to the multi-toxin argument in this article.
I’ve included the most substantive links here; there are more in the original.