On July 23, 2024, Closer To Truth host Robert Lawrence Kuhn gave the keynote address at an event at the University of Latvia in Riga. The event celebrated the launch of the book he co-edited with Peter Gobets, "The Origin and Significance of Zero". Kuhn spoke online about the concept of Nothing as well as his essay, “Levels of Nothing”, which appeared in Skeptic Magazine. That essay is available to read for free here.