Escape city life by visiting this remote Alaskan island with few trees but plenty of rugged beauty. Plus, discover the region's most breathtaking attractions.

Although the general ideas David Mildrexler wrote (the column "Large trees are vital to protect water," in the Jan. 29 print ...

I would venture to guess that the most popular evergreen tree for Idaho landscapes is the blue spruce (Picea pungens). They ...

These small conifer trees for birds provide food and refuge in all seasons. These varieties are perfect for small landscapes.

Towering blue spruce trees shade the campsites and provide some privacy in the already secluded forest. Every site has creek access, making it perfect for those looking for a summertime escape. Be ...

You might think that explaining why the sky is blue would be kind of simple. But even a brief explanation of it requires a lot of science. The colors of everything you see are produced in different ...

Blue rings found in the stems of trees and bushes in Norway point to a historic cold period in the late 1800s, but the exact cause of this climatic event remains unclear, scientists say.

A blue ring formed in 1902 in a tree in northern Norway. Credit: Image by Pawel Matulewski and Liliana Siekacz. Blue growth rings in woody plant stems indicate years when cells failed to lignify ...

Selecting Mount Iškoras in Norway for a search for blue rings, a team of researchers took samples from 25 pine trees and 54 juniper shrubs, representing the species Pinus sylvestris and Juniperus ...

These eruptions likely cast a volcanic winter over the northern hemisphere, impacting the trees at Mount Iškoras in Norway, where the study was conducted. "Blue rings look like unfinished growth ...

A blue ring formed in 1902 in a tree in northern Norway. Image by Pawel Matulewski and Liliana Siekacz. Scientists studying pine trees and juniper shrubs in northern Scandinavia are revealing the ...

Overall, only 2.1% of the pine trees' rings and 1.3% of the juniper shrubs' rings were blue; the cells which hadn't lignified properly were mainly found at the end of growth rings, in latewood ...