Trees for a Cold Climate - Geophysical Institute
Feb 26, 2026 · 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 leaves their …
Tropical Fossils in Alaska | Geophysical Institute
3 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. These …
More on Why Tree Trunks Spiral | Geophysical Institute
Mar 26, 2026 · 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 counter …
The Turkey and the Tambalacoque Tree - Geophysical Institute
Nov 14, 1990 · The elderly trees still produced seeds, but none of the seeds gerrninated, even when carefully tended under ideal nursery conditions. It was tempting to think the old trees were incapable …
Pollen season arrives, blame the trees | Geophysical Institute
May 7, 2008 · The air is rich with pollen because spring is the mating season for trees. The first step in a tree's reproductive dance is to release sperm, safely held in the center of a pollen grain. Trees …
Bonsai trees tell of winters long past | Geophysical Institute
Jun 23, 2022 · The trees have told him that giant weather systems like the Aleutian Low seem to have persisted despite human-caused warming. During winters when the Aleutian Low is strong, warmer …
Trees as Earthquake Fault Indicators | Geophysical Institute
Mar 26, 2026 · A swath of dead, tilted and broken trees now makes obvious the trace of the Fairweather fault that broke in July 1958 to devastate Lituya Bay and nearby parts of southeastern Alaska. …
Northern Tree Habitats | Geophysical Institute
Mar 26, 2026 · Why take a chance with exotics, when native trees have proven their ability to survive? Several reasons prompt testing of foreign tree species. Human activities often create and maintain …
Feltleaf willows: Alaska’s most abundant tree | Geophysical Institute
May 25, 2023 · The range of the feltleaf willow, probably the most numerous tree in Alaska. From Alaska Trees and Shrubs by Les Viereck and Elbert L. Little, Jr.
Orange trees in the Alaska Range | Geophysical Institute
Sep 3, 2020 · While wandering middle Alaska this summer, I noticed orange spruce trees along the entire length of the Denali Highway, from Paxson to Cantwell.