Nitrogen: The Unsung Hero of Warfare and Agriculture

Why do some places pump out inventions and progress, while innovation lags elsewhere? Science writer Matt Ridley has surveyed the history of innovation, from Roman numerals to CRISPR. He's identified the factors society needs for innovation to flourish--and what it often does to smother it. He joins Heaton to discuss best practices for civilization and the history of inventions, all in his new book, "How Innovation Works."