Richard Preston

When you get up into the crown of a redwood tree, you lose sight of the ground entirely. You also lose sight of the sky. And you're in a lost world. You're in an undiscovered, unexplored ecosystem, somewhere between Heaven and Earth, filled with forms of life, not all of which have been given names by scientists yet.

What the experts are telling me is that there's very little chance that Ebola is going to mutate into something that could spread directly through the air. The real concern is not whether Ebola could go airborne, but whether it could spread faster.

In a pine tree behind me, an eagle waits out the rain, hunched into himself, brooding. Crows squabble, a murder chasing a raven. Seals cruise the lines of fishing nets bobbing in the water, hoping for an easy meal, the tender bellies of salmon.