15- I found two more blogs.

The first one, in french, is done by an association of agricultural professionals.

They are 19 members, and write short notes, concise, very interesting.

Highly recommended.

http://blogresonnances.fr/

The second one is really a website, more than a blog. This is another association, from USA, who reflects and works on genetic research and GMOs. You will find a scientific point of view, that could help you to make a more detailed analysis on the subject, without the interference of anti-globalization groups that only transmit an ideological vision of the problem.

Very interesting, although sometimes quite difficult. It is written in English.

http://www.geneticliteracyproject.org/