August 18-20; Friday: noon–4pm; Saturday: 11–4pm; Sunday: 11–4pm https://arboretum.harvard.edu/events/event-signup/?id=76678 The Caterpillar Lab is coming to the Arboretum! This immersive, interactive exhibit features hundreds of native caterpillars at every stage in their life cycles. Learn from the experts as you explore the displays. The Lab offers something for every age group! FREE. Registration is not required but is appreciated as it helps us with planning. There will also be a caterpillar walk on Friday, August 18…