We are currently in the midst of a volatile geopolitical climate in which answers to intractable global problems are more elusive than ever before.

While few can agree on solutions, all agree that economic disparity between rich and poor countries is at the heart of the many issues plaguing the world today.

The Power of Productivity, by retired McKinsey partner William Lewis, provides a sweeping, practical look at why some countries are rich, why others are poor, and what we can do about it.