follow this link for interesting info

http://www.ucsusa.org/food_and_agriculture/

in particular, i think the monthly newsletter might be interesting. but there are other articles here too that i plan to read in the future.

AND another-

http://www.organicgardening.com/learn-and-grow

i subscribe to this magazine and find the info very helpful. the website has just been updated, so check it out too!