I've been reading a lot about round up weedkiller and I am eating only organic as of late. 
Oh, I see, what about that weedkiller made you decide to go organic?  I know organic farming is a great agricultural alternative that's rapidly growing!
Independent studies are sure it can cause lots of diseases. . There is a standard for organic that is used to label true organic items.
Ah, I see, I've also heard of the standards used in organic farming, such as how they cycle resources and conserve biodiversity. I wonder where in the world is organic farming happening?