Tune in to learn about one of our favorite signs of summer—fireflies! Dan Young, Professor of Entomology at UW-Madison, will describe the critical role wetlands play for these insects. He’ll start by defining what we mean by “firefly” and providing an overview of this group of Wisconsin fauna. He’ll share a quick overview of bioluminescence throughout the greater tree of life, describe how biological light is produced in fireflies, and discuss the evolution and significance of bioluminescence with respect to the biology and natural history of fireflies. Dr. Young will wind up his presentation with comments relating to an observed general decline in firefly populations in many parts of North America and notes on firefly conservation.