A simple blue stain could force trees into giving up their memories of cold summers and volcanic winters, a recent study ...

Volcanic eruptions and cold summers leave lasting marks in the wood of northern trees, unlocking the secrets of past climate extremes.

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 ...

Scientists studying pine trees and juniper shrubs in northern Scandinavia are revealing the weather of the past by looking at tree rings — which can tell us far more than just the trees’ age. ‘Blue’ ...

Bugs like mites, aphids, or even pine beetles can wreak havoc on your trees and shrubs, causing the needles to brown. There's ...

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 ...

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 ...