There is a vicious cycle in conventional agriculture where ever more
toxic pesticides and herbicides are required to combat weeds and pests
that adapt to the old formulas. That is now happening with GMO crops.
This is so shortsighted. Organic agriculture produces higher yields,
more drought resistance, less toxicity, and more nutrition per acre.
Organic food is only more expensive if you don't consider the
externalities that are reflected in doctor bills, environmental
cleanups, and ecological dead zones.

So tell me again why GMOs are necessary to feed the world?

http://grist.org/news/five-pest-spec...rn-and-cotton/