Mass killings in USA

The article is "America's killing contagion" by the week.com. This article discusses the prevalence of shootings within America and why the amount is increasing. The audience is anyone who is interested in learning about mass killings. The author uses logos by mentioning statistics to show the increase in crime, mentions the profiles of the killers, and discusses the culture behind the rise of this violence. He uses pathos by mentioning specific example of these killers and shootings by showing some of their problems. He appeals to ethos by mentioning many experts and using their authority on the subject.

Gluten

The article I read is called "against the grain" by Michael Specter. The purpose is to discuss wether gluten has health disbenefits for those who do not have celiac disease or at least a gluten sensitivity. The subject was gluten. Occasion was the rising amount of people avoiding gluten despite not having celiac disease. The audience was readers of the New Yorker. The author did a fairly good job showing both sides of the argument. He uses logos by mentioning studies that have been done, showing both their results and numbers of participants. He also mentions proven statistics. He uses ethos by mentioning his own personal experiences. His pathos is mostly found in anecdotes he tells of other people. 

Stem cell controversy

The article "how fetal tissue is used in medical research" discusses both uses and ethical controversies of stem cell research. It goes through actual progress made, such as vaccines, and mentions possible treatments that could be derived from this research. It discusses legal changes that have occurred, either making it legal, illegal, or legal with numerous requirements. It shows both sides of the argument fairly well, telling why stem cells are used, the claims against it, the response to the claims, and the moral controversy between those who think an immoral means can not justify a good end and those who think it is completely justifiable. It shows both sides appeal to logos, such as how cure have been derived from stem cells and how there have been cases, or at least claims, in which planned parenthood employees have broken the law. It also shows their pathos in which those who support stem cell research mention how practically everyone benefits from it and those against it by saying how they think something that is absolutely wrong can not be justified even if it helps others.