What I'm most fascinated by is the experiments scientists come up with to learn about bees. A prime example is all the hoops Tom Seeley jumped through to learn

What I'm most fascinated by is the experiments scientists come up with to learn about bees. A prime example is all the hoops Tom Seeley jumped through to learn how swarming bees pick a new home. He found that they measure the volume of the cavity they move in, they consider how high up the place is, how big the entrance is, and whether bees have lived there before - just to mention a few. He performed his experiments on a "bee-deserted island" (with no honeybee colonies). The icing on the cake is that bees hold a democratic debate & voting as they make a life/death decision. He shared it all in his easy-to-read illustrated book: Honeybee Democracy, highly recommended.