Politico reporter Ken Vogel discovered that the Clinton Foundation has collected as much as $11.7 million in speaker fees from nonprofits. Some argue that celebrity appearances create buzz and more donations for nonprofits, but critics say the high price tags don’t produce worthwhile, measurable returns. Do big-name speakers add value to a charity's bottom line or are they just an “empty calorie high?”

A listener poses a moral dilemma regarding aid work; another weighs in on whether the business mindset can improve philanthropy.

Billionaire John Paulson recently gave $400 million to Harvard University. Critics say the money could have done more good elsewhere. Should large donations be scrutinized and debated? Or should we all just be thankful that Paulson is parting with $400 million at all?

How do you figure out exactly what people suffer and die from in every part of the world? Christopher Murray decided to try. His resulting Global Burden of Disease initiative ended up causing controversy among aid groups and large institutions like the World Bank and the United Nations.