Chip Chick on MSN13d
These Bizarre Blue Tree Rings Are Unveiling Details About Cold Summers From A Century AgoIn order to grow properly, trees need an adequate period of warmth during their growing seasons; otherwise, the cell walls [… ...
A close-up of a young green pine ... displayed blue rings in 1902, while 84 percent of pines and 36 percent of shrubs exhibited them in 1877. Junipers, found farther north than trees, appeared ...
The team cross-sectioned and stained these samples, then photographed them under a microscope so that ... 84% of pine trees and 36% of juniper shrubs. Pine trees seemed to be more vulnerable to blue ...
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