
Tropical Fossils in Alaska | Geophysical Institute
4 days ago · Paleobotanist Jack A. Wolfe of the United States Geological Survey at Menlo Park, California, has found a number of tropical rain forest fossils along the eastern Gulf of Alaska. …
A similar instrument will be housed in a new Climate Change Monitoring Station this spring. surface, with no large trees around to inject chemicals in it, no dust storms, and no polluting …
Cottonwood and Balsam Poplar | Geophysical Institute
Nov 20, 2025 · The Klukwan giant belies the belief that trees tend to get smaller the farther north one goes. Both balsam poplar and cottonwood have value for fuel wood, pulp and lumber.
Black Spruce | Geophysical Institute
4 days ago · Somehow black spruce trees seem like the jackasses of the northern forests--sort of ungainly looking, ugly little beasts that somehow can survive under conditions prohibitive to …
Diamond Willow | Geophysical Institute
4 days ago · Red, diamond-shaped depressions in the otherwise creamy white willow wood create the curious, sometimes exotic, patterns exhibited by canes and furniture made from Alaskan …
Birch Sap Sugaring Off | Geophysical Institute
Jul 11, 2025 · Then, the sap of birch trees flows upward and makes a reasonable northern substitute for sugar maple sap. The sap from any birch will do. One of the more common trees …
Trees for a Cold Climate | Geophysical Institute
Apr 1, 1993 · The hardiest trees rely on physics more than on chemistry to make it through the winter. When the seasonal chill begins to reach black or white spruce, for example, the sap …
More on Why Tree Trunks Spiral | Geophysical Institute
Nov 20, 2025 · Granted, not all trees exhibit the same twist, but the majority of them do. The phenomenon can be likened to the claim that water will always spiral out of a drain in a …
Tamarack -- Not A Dead Spruce | Geophysical Institute
Nov 20, 2025 · When one of these trees finds itself on a better site, however, it shows a remarkable change of pace. Individual tamarack growing in white spruce stands may achieve …
The Life of A White Spruce In The Subarctic | Geophysical Institute
Nov 20, 2025 · It was found that, over the course of a year, trees at both locations produced the same amount of wood, but that Alaska trees produced the wood in one-half the time required …