Millions of GMO insects could be set loose in Florida Keys

[GreatGazoo]

25. GMO crops have the same or lower yields as conventional crops

GMO crops are made to withstand additional pesticides.

And in a new paper (PDF) funded by the US Department of Agriculture, University of Wisconsin researchers have essentially negated the "more food" argument as well. The researchers looked at data from UW test plots that compared crop yields from various varieties of hybrid corn, some genetically modified and some not, between 1990 and 2010. While some GM varieties delivered small yield gains, others did not. Several even showed lower yields than non-GM counterparts. With the exception of one commonly used trait—a Bt type designed to kill the European corn borer—the authors conclude, "we were surprised not to find strongly positive transgenic yield effects." Both the glyphosate-tolerant (Roundup Ready) and the Bt trait for corn rootworm caused yields to drop.

http://www.motherjones.com/tom-philpott/2013/02/do-gmo-crops-have-lower-yields

Science studies cause and effect. PR on the other hand, often ignores such things.