A new machine-learning system developed at the University of Alaska Fairbanks can automatically produce detailed maps from satellite data to show locations of likely beetle-killed spruce trees in ...

The Spruce Creek fire that’s burning on nearly 5,700 acres of U.S. Forest Service land in southwestern Colorado is 38% contained, fire officials announced Friday.

The name speaks for itself — Sitka Spruce Park on Amaknak Island has dozens of spruce trees, creating a rare forest-like sanctuary. Regional lands are known for their tundra valleys filled with ...

For the last 12,500 years, the forest has ebbed with the rise and fall of ice at its margins. During the last ice age, black spruce took root as far south as the tablelands of Colorado and New Mexico.