This podcast episode of "Trillions" focuses on municipal bonds (munis), a topic the hosts admit is often overlooked. The discussion begins by addressing the common perception of munis as boring, then delves into their tax advantages and real-world applications, illustrated by examples like funding for schools and infrastructure. The hosts and guest discuss the potential risk to the tax-exempt status of munis and analyze various muni ETFs, including their liquidity and the rise of active management in the space. Finally, they explore the potential for more thematic muni ETFs, focusing on specific sectors like hospitals or schools, suggesting a way to make this investment area more appealing to investors.