Dec 4, 2025 · 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 …

Dec 4, 2025 · 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 …

Sep 21, 1995 · In a drunken forest, trees--often pipe-cleaner black spruce--tilt in all directions like a group of rowdy revelers stumbling along the street. Unlike pendulous pub patrons, drunken forests …

Dec 7, 2023 · Three birch trees stand in a field at the University of Alaska Fairbanks during a recent celebration for three scientists killed in a helicopter crash in July 2023. Photo by Alyssa Enriquez.

Dec 4, 2025 · 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. …

Sep 21, 2023 · These trees are now responding to fewer hours of sunlight by ceasing to flood their leaves with chlorophyll. The sudden lack of that green, energy-converting chemical allows the leaves …

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 a size comparable …

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 …

Feb 26, 2004 · The result was an area the size of Connecticut in which spruce trees died en masse, giving the forest ecosystem a makeover from which it won’t soon recover. Now, most of the beetles …

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 counter …