I have used this site for several years. It creates an advanced search in Google. You can designate a search for .edu, .gov sites or encyclopedias (good for pre-searching, etc.).
ipl2: Information You Can Trust features a searchable, subject-categorized directory of authoritative websites; links to online texts, newspapers, and magazines; and the Ask an ipl2 Librarian online reference service.
interesting article taking the view that organic food is not necessarily the correct choice, and it certainly will not solve the world's food problem.
I used another search engine--Kidinfo.com
Really interesting article, LaVerne. This is the first time I've seen this point about "romanticizing" pre-industrial food practices. It's a complicated issue, but certainly worth wondering about.