see that wikipedia presents a form. take a look at the content table to your left with 12 points ranging from "history," "on the go," "cuisine variants," to "advertising," "business," and finally "criticism" (where you find the counters to fast food advocates). etc. at the end of the article you find "references," "further reading" and "external links." the "reference section has 84 footnotes! this is your bread and butter. each wikipedia article is structured following the same form.
here are the topics:
(this important topic is at the intersection of public health, food production and public policy, i.e., the impact of globalization and cheap homogeneous food and the coming back of artisanal food, regional cuisine, farming, promoting taste as well as the organic food movement).
factory farms & animal welfare
(generally little appreciated, this topic takes an ecological and human/animal dimension: the link between animal-processed foods, ecological degradation, all tied to the still obscure field of animal ethics).
(one of the hottest social topics being discussed right now in America, at the intersection of personal vs. religious freedom, secularism, legislation, homosexuality, human rights, cultural consensus, etc).
(a global problem intersecting, civil rights, policy, new technologies, power excess, international relations, corporate neutrality).
rule of law
(after Trump's inauguration and even with Obama's spate of executive orders, this point becomes relevant).
social media & culture
(privacy issues, information overload, cyber bullying, fake news, etc).
(moral issues arising from our present and future interaction with A.I.)