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 leaves their …
Northern Tree Habitats | Geophysical Institute
Apr 13, 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 …
Tropical Fossils in Alaska | Geophysical Institute
Apr 16, 2026 · 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 …
Why Lower 48 Fruit Trees Don't Do Well in Alaska | Geophysical Institute
Apr 16, 2026 · Newcomers to Alaska will frequently order young pine, fruit or maple trees from their home state in the lower 48. They enthusiastically proclaim that the trees should do well here because …
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 …
More on Why Tree Trunks Spiral | Geophysical Institute
Apr 16, 2026 · In an earlier column , I asked if any readers could explain why the grain in trees seemed to spiral up the trunk-in a clockwise direction. That is, spiral marks in old trees crack open from the …
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 …
Trees as Earthquake Fault Indicators | Geophysical Institute
Apr 13, 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. …
Feltleaf willows: Alaska’s most abundant tree | Geophysical Institute
May 25, 2023 · Imagine being a moose in late May: You have just survived 200 days of cold and darkness by munching the equivalent of a large garbage bag full of frozen twigs each day.