In order to grow properly, trees need an adequate period of warmth during their growing seasons; otherwise, the cell walls […] The post These Bizarre Blue Tree Rings Are Unveiling Details About Cold ...

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

Other studies have linked blue rings to global climatic events, such as cooling after large volcanic eruptions. 1902's cold June could be related to the eruption of Mount Pelée in May.

‘Blue’ tree rings, which indicate that the cell walls of that year’s growth never lignified properly, show us when a summer was too cold for the plants to grow. The scientists identified blue rings ...

A lobe of the polar vortex will arrive in the United States this weekend, bringing the lowest temperatures in years and snow and ice to the East and Deep South.

Taken from a tree in Norway, this stained tree sample shows a blue ring from 1902. (Credit: Pawel Matulewski and Liliana Siekacz) Human skin isn't the only thing that can change color after facing the ...

Blue growth rings found in woody plant stems represent years when cells did not lignify properly because of summers too cold for growth When the going gets cold, even tough trees struggle with ...