The Human World

Image 1. Researchers on a tree canopy platform in an old-growth forest, Oregon.

Image 2. Climbing to the platform, about 250 feet off the ground.

Image 3. Climbing to the platform, about 250 feet off the ground.

Image 4. An easier way to get to the canopy
The Wind River Crane in Washington.

Image 5

Image 6. Examining lichens at the very top.

Image 7. Examining lichens in a muskeg, Alaska.

Image 8. Taking notes. The gun is in case of a bear.

Image 9. Measuring a tree.

Image 10. Examining a nest box, built for boreal owls but invaded
by northern flying squirrels that built nests of lichen inside.

Image 11. Examining a lichen nest built by a flyiing squirrel.

Image 12. Putting lichen samples into crucibles.

Image 13. Tending a sulphur determinator.