Every year, as the leaves turn and a chill enters the air, a familiar debate lights up social media feeds. The question is simple yet divisive: when is the right time to put up the Christmas tree?

Coronae glow on the tips of spruce needles, induced by charged metal plates in a laboratory. (William Brune) For the first time, meteorologists have glimpsed the tiny bursts of ultraviolet light ...

Tree branches in art throughout history follow geometric rules related to fractal geometry. 'Almond blossom' by Vincent van Gogh. Van Gogh Museum, Amsterdam. Do artists and scientists see the same ...

A professor's casual hike in the High Sierra turned into a new elevation record for California's highest tree, the Jeffrey pine, which wasn't formerly known to grow at extreme elevations. UC Davis ...

When trees and soil fungi form close associations with each other, both partners benefit. Many tree species have further enhanced this cooperation by forming a concurrent symbiosis with two different ...

As extreme heat claims more lives during ruthless summers in the region, Southern Nevada is upping the ante in its tree planting efforts. But a new study suggests trees alone may not be enough to make ...

For the second year in a row, The Morton Arboretum’s Tree Root Biologist Luke McCormack, Ph.D., has been recognized as one of the most cited and influential researchers worldwide by global information ...

Fall leaf color and climate change, urban trees, heat islands and downtown honeybees. Why do leaves change color in the fall, and how will climate change affect that rainbow of color? Plus, urban ...

A study of over 275 violins suggests that Antonio Stradivari used wood from high-altitude forests in northern Italy to craft ...

Add Yahoo as a preferred source to see more of our stories on Google. Tree branches in art throughout history follow geometric rules related to fractal geometry. 'Almond blossom' by Vincent van Gogh.