The bald cypress tree (Taxodium distichum) has been quietly standing sentinel to centuries of ecological change in the murky wetlands of the American Southeast. These towering trees are some of the ...

Trees need a certain number of warm days in their growing seasons to grow properly; otherwise, the cell walls of new growth don't lignify properly, creating blue rings that appear when wood samples ...

Weather patterns like heat waves or dry spells can sometimes stall over one region. A new University of Arizona study found clues about why. The researchers analyzed tree rings from centuries-old ...

Tree-ring samples taken by Paulo Quadri, who earned a Ph.D. in environmental studies from UC Santa Cruz, were included in the study. (Photo by Luz A. de Wit) The top-line findings of a massive ...

Reforestation is gaining global momentum as a climate solution, but its success depends on how and where it’s done. A new study mapped locations where tree planting and forest regrowth are most likely ...