Professor Richard Sylla is interviewed for an article on historically low interest rates
— July 16, 2019
Excerpt from MarketWatch -- "'If a significant fraction of [the world’s bond market] has negative interest rates, that’s pretty unusual,' said Sylla. Even in recent history, he added, such occurrences are rare. In 1940-1941, he said, rates on short-term U.S. bonds went negative as the economy still grappled with the fallout from the Great Depression."