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Presents a concise overview on issues associated with illegal immigration; and contains primary source quotes and statistics on topics including the economic and social effects of illegal immigration.

Explains the science of global warming, examines the debate over the causes and extent of the problem, discusses some of the threats posed to the planet and its inhabitants by global warming, looks at possible solutions, and offers suggestions on how to adapt to a warmer future.

Contains fourteen essays in which the authors share varying perspectives on the question of whether North Korea poses a nuclear threat to the global community.

Examines the dangers threatening the world's fresh water sources, speculating as to how long the water reserves will last and exploring what can be done to protect the reserves and help them last longer.

Discusses the popularization of organic foods, looks at what it means to be organic, traces the history of the organic food movement, discusses the debate over whether organic foods and farming are beneficial to health and the environment, and considers the future of organic food production.

Objectively and thoughtfully explores the topic of pandemics.

Diverse opinions that examines important social, political and economic debates regarding the rights of animals.

Explores the challenges posed by global warming on energy production, discussing the world's reliance on fossil fuels and efforts to cut fossil fuel emissions, and describing alternative energy solutions and their pros and cons.

Examines how global warming has impacted farming and the world's food supply, discussing concerns about water, soil, pests, changes in temperature and precipitation, the impact on livestock, dairy, and food production, adaptations in the agricultural sector, and other related topics.

Presents a diverse selection of primary sources about gasoline representing all sides of the debate in question.

Explores such aspects of the gays in the military debate as whether they should be allowed to serve openly, the effects of repealing Don't Ask Don't Tell, and what the impact of their serving openly would be on the military.

Presents a diverse selection of primary sources representing all sides of the debate in question about politics and the media.

Examines The Tea Pary movement and presents a diverse selection of primary sources representing all sides of the debate in question.

Fourteen essays offer varying viewpoints on issues related to same-sex marriage, discussing whether or not same-sex marriage should be legalized and if it is a threat to society in any way.

Examines the political and social unrest that plagues North Korea, discussing how the country's oppressive regime has impacted its people, history, economy, and culture.