Forests are never silent. That's the first thing you learn whenever you go out camping, hiking, or anything else where you might have to pass through or live in a forest. Forests aren't silent for a good reason. They teem with life, such as birds, insects, and small animals; that's just the life that makes noises. Trees, grass, and bacteria are also bountiful. This, of course, is no secret. One forest, somewhere just northeast of Manchester, England, is totally silent. People drive past it millions of times per year, but from their car, they can't notice the lack of sound.