In this episode we're celebrating the official return of summer to the northern hemisphere by answering some summertime questions! How do fireflies glow and can they control how they blink? Why are owls nocturnal? How do they swivel their heads around? And how do they hoot? Plus a few burning questions about why bug bites itch, why poison ivy and caterpillars and berries can all be poisonous, and how come we have to wear sunscreen! We'll get answers from wildlife biologists Kent McFarland and Bryan Pfeiffer. Plus we hear an episode of one of VPR's other podcasts, Outdoor Radio.