We are joined by Prof. Lea Nienhaus from Florida State University to learn about photon upconversion with perosvkites, a strategy for increasing the efficiency of photovoltaic energy conversion among other applications that her group has pioneered in the last few years.  We also talk to Lea about her science communication project, "Kitchen Spectroscopy", that she launched at the beginning of the COVID-19 pandemic that empowers people to discover the plethora of "glowy things" that can be found at home.