Jan 29, 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 …

Jan 29, 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 …

Jan 29, 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 …

Jan 29, 2026 · The trees themselves play surprising roles at some distance from the forest: in southeastern Alaska, for example, terpenes---natural hydrocarbons exuded by conifers--are an …

Jan 29, 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. …

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 …

Jun 18, 2021 · These exotic trees — some now 70 feet tall — are a nice legacy for the men who planted shin-high seedlings years before Woodward last visited the plot in 1981. Les Viereck, a renowned …

Nov 27, 2024 · Stan Boutin has climbed more than 5,000 spruce trees in the last 30 years. He has often returned to the forest floor knowing if a ball of twigs and moss within the tree contained newborn red …

Jan 29, 2026 · By late winter, intricate buildups of hoarfrost crystals have formed on wooden poles and other objects. Warming rays of the sun cause evaporation of whatever frost may have formed on the …

Jan 29, 2026 · Spruce trees planted on the islands by the Russians in 1805 are doing just fine and reseeding themselves naturally, although the total tree population hardly amounts to a forest.