One thing I lamented recently was the loss of AskHistorians, AskArcheology and AskScience.
Particularly the last one, as I wondered, while putside having lunch, if Wasps dance like bees do, and if not, do they have a similar form of communication other than pheromones?
Because how do those little angry bastards scout out that I'm enjoying lunnch in a park, and then go back to get the gang together to annoy me into leaving.