Standing there on my front lawn, I notice all my neighbors are out as well, many with hands pressed against their ears, some running around franticly like they have mosquitoes trapped in their ear wax. Every dog in the city is howling, adding a thousand dissonant harmonies to the awful noise in the air. I ask a neighbor what it is, and he doesn't know. Spotting a news helicopter overhead, I turn on the local news. The report says that the noise is not just in my town. It's being heard everywhere, all over the world, and its source is still undetermined.