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  1. Northern Tree Habitats | Geophysical Institute

    Mar 26, 2026 · The best lodgepole pine races are faster-growing than the local spruces and larch planted in the same area; but again, only time will tell if the advantage will remain with the pine. Why …

  2. Alaska's Gift--The Pine | Geophysical Institute

    Mar 12, 2026 · Pine incense was used in religious ceremonies by the Aztecs, the Mayas, and the Romans. Pines were mentioned in Greek mythology. Greek scholars knew a great deal about pines, …

  3. More on Why Tree Trunks Spiral | Geophysical Institute

    Mar 26, 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 …

  4. Visit to an exotic tree plantation in Alaska | Geophysical Institute

    Jun 18, 2021 · But a few imported trees here stand tall, straight and perfect: Siberian larch and lodgepole pine seem to be the champions, so far. “Larch in their first 40 years will outgrow local white …

  5. Raven roosts shrouded in mystery | Geophysical Institute

    Mar 30, 2023 · In the 1990s, Bernd Heinrich and John and Colleen Marzluff — all then at the University of Vermont — climbed trees in Maine before sunset to watch ravens roosting in groves of eastern …

  6. Why Lower 48 Fruit Trees Don't Do Well in Alaska | Geophysical Institute

    Feb 26, 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 …

  7. The Smell of Christmas | Geophysical Institute

    Mar 19, 2026 · One of many Christmas pleasures is the aroma of a freshly cut tree. Both spruce and pine have it. So do cranberry fields in the morning, orange peelings, and some paint thinners.

  8. 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 …

  9. Black Spruce - Geophysical Institute

    Mar 26, 2026 · Somehow black spruce trees seem like the jackasses of the northern forests--sort of ungainly looking, ugly little beasts that somehow can survive under conditions prohibitive to the taller …

  10. A chickadee’s midwinter roosting place | Geophysical Institute

    Dec 24, 2020 · If chickadees around Fairbanks endure long winter nights in birch trees, the nighttime haunts of their relatives farther north — the Siberian willow tit of Russia’s Arctic and the gray-headed …