Excessive CEO Salaries.

Compensation expert Graef Crystal. He used to design compensation packages for CEOs. But he's since become critical of the widening gap between what top executives make and what workers do. He recently conducted a preliminary survey of executive compensation in the nation's largest corporations. The survey found that the pay of chief executives has been rising, while that of workers has stagnated.

Investigative journalist Michael Moss's 2013 book, Salt Sugar Fat, explored food companies' aggressive marketing of those products and their impact on our health. In his new book, Hooked, Moss updates the food giants' efforts to keep us eating what they serve — and how they're responding to complaints from consumers and health advocates.

Law professor Adam Winkler says that in the past 200 years, businesses have gone to court claiming constitutional rights that were originally intended for people. His new book is We the Corporations.