If everything you know about hive life came from “Bee Movie,” it’s time to upgrade. Join beekeeper Dr. Katie Krebs in an online lecture on hive activity and hierarchy. Then, pick one of four Saturday sessions to visit Longwood’s hives for a firsthand look at what goes on inside; you’ll be able to watch the bees dance and the hive swarm up close. Head to the Longwood Gardens website for more details.