Energy is liberated matter, matter is energy waiting to happen. - Bill Bryson

For the moment we might very well can them DUNNOS (for Dark Unknown Nonreflective Nondetectable Objects Somewhere).

It is easy to overlook this thought that life just is. As humans we are inclined to feel that life must have a point. We have plans and aspirations and desires. We want to take constant advantage of all the intoxicating existence we've been endowed with. But what's life to a lichen? Yet its impulse to exist, to be, is every bit as strong as ours — arguably even stronger. If I were told that I had to spend decades being a furry growth on a rock in the woods, I believe I would lose the will to go on. Lichens don't. Like virtually all living things, they will suffer any hardship, endure any insult, for a moment's additional existence. Life, in short, just wants to be.

In the Smokies, over 90 percent of Fraser firs—a noble tree, unique to the southern Appalachian highlands—are sick or dying, from a combination of acid rain and the depredations of a moth called the balsam woolly adelgid. Ask a park official what they are doing about it and he will say, “We are monitoring the situation closely.” For this, read: “We are watching them die.”