The following databases cover a wide range of disciplines and publications that cover topics related to food and agriculture including ethics, science, food policy, social impacts, health impacts, environmental impact of growing food, and more.
The USDA National Agricultural Library (NAL) contains AGRICOLA, PubAg, and the NAL Digital Collections. Free resource.
JSTOR provides full-text PDF access to scholarly journals in Arts and Sciences and Business. The database is searchable by keyword, item type, publication title, and language, and browsable by discipline and journal issue. Each journal has an individual "moving wall" date of available content; the date range is 0-5 years previous to the current year, depending on the journal.