Is there any reason why most non-governmental organizations (NGOs) tend to publish non-peer reviewed literature? I have seen some NGO scientists as co-authors, even in some important papers, but most of their production is reports which are not peer-reviewed. While it is true that most NGOs do not do basic research but, some of their reports could be easily be converted into reviews, and some of their projects into applied research.
Do they want to avoid peer review for political reasons in order to be able to convey the message they want? In my view their message would be much stronger if it came from a peer-reviewed article. Is it also a matter of time as peer-reviewed articles take a long time to get published?