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 · 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. …

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 …

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.

Jan 6, 2011 · Pollen samples from lake-bottom muck also show that basswoods, hickories, elms and other trees grew in Alaska and other northern places millions of years ago. Those fair-weather trees …

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 …