Unlike bees, wasps are aggressive by nature. It takes very little to provoke them. And they often build nests where people are likely to cross their paths. read more
Wasps are attracted to sweet substances that's why you tend to see them around soda bottles left unattended and fruit that has fallen from trees. You say they tend to target your face, if you chew a lot of gum, drink sodas and eat sweets, they may be smelling something on your breath. read more
Most of the 20,000 species of wasps are solitary, but because solitary wasps do not sting, most humans are more familiar with social wasps, who live in complex communities. Only female bees and wasps can sting. Males do not have the egg-laying organ that is modified into a stinger on female insects. read more
It's a shame that a wasp's motivations for stinging aren't always obvious (I mean I'm interested in wasps but I sometimes have no idea why a sting happened in some situations), so it's easy for people to believe that they just little packages of concentrated hate. read more