From the Pope’s encyclical on climate change and the environment:
Although no conclusive proof exists that GM cereals may be harmful to human beings, and in some regions their use has brought about economic growth which has helped to resolve problems, there remain a number of significant difficulties which should not be underestimated. In many places, following the introduction of these crops, productive land is concentrated in the hands of a few owners due to “the progressive disappearance of small producers, who, as a consequence of the loss of the exploited lands, are obliged to withdraw from direct production”. The most vulnerable of these become temporary labourers, and many rural workers end up moving to poverty-stricken urban areas. The expansion of these crops has the effect of destroying the complex network of ecosystems, diminishing the diversity of production and affecting regional economies, now and in the future.
So, there you go. On the authority of a supposedly infallible 78 year old Argentinian the expansion of GM crops has destroyed ecosystems.
I haven’t read the entire thing – who would, it’s 200 pages long – but it looks as if the Pope and Greenpeace have a lot in common in their selective attitude to science. Listen to the scientists on climate change, but just ignore them when it doesn’t suit your unshakable dogmas.