Scientists studying pine trees and juniper shrubs in northern Scandinavia are revealing the weather of the past by looking at ...

Since trees and shrubs can live for hundreds of years, identifying these blue rings allows us to spot cold summers in the past. By looking at pine trees and juniper shrubs from northern Norway ...

Strange blue rings found in Scandinavian trees leave scientists perplexed - Rings hint at unusually cold summers in Norway ...

Blue growth rings in woody plant stems indicate years when cells failed to lignify properly due to summers that were too cold ...

Buchwal's team analyzed samples from 25 Scots pine trees and 54 juniper shrubs, staining and photographing their growth rings under a microscope. The study revealed that blue rings were more ...

The scientists collected core samples from 25 Scots pine trees and stem discs from 54 juniper shrubs, creating paper-thin ...

Scientists studying tree rings in northern Norway have linked ‘blue’ rings, caused by cold summers, to volcanic eruptions ...

J. conferta ‘Blue Pacific’ – Also called Blue Pacific Shore, this slow-growing, heat-tolerant juniper has handsome blue-green ...

Learn more about these signs of summertime cold, perhaps tied to volcanic activity in 1877 and 1902.