We have a plague of periodical Cicada's right now that have been huuuuuuuummmmming for a week so far - we have about another week left (or so they say). It is a high pitch hum that never changes its tone or takes a break. They hum (more like scream) from the time the sun comes up, until it goes down at night. We can hear it in our house - even in our basement. Yay us. There must be a million of the Cicada's here.
Even though it's annoying enough to make anyone feel like going crazy, it's kinda neat since this doesn't happen all the time - I think it only comes around this bad every 17 years or so. But it doesn't change the fact that I'd really like some quiet... :) lol
I took some pictures of their exoskeletons and one of the live bugs - I will post them after I upload them later.