The presents are unwrapped, the cookies are crumbs, and that real Christmas tree will become a fire hazard soon enough. Most ...

Scientists at Washington State University are looking at what goes into that choice, contributing data to research to ...

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?

Every year, about 10 million Christmas trees end up in landfills, contributing to greenhouse gas emissions through anaerobic ...

The oldest trees in the forest carry outsized importance. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Ancient trees, the venerable sentinels ...

Trees are some of the largest and most widespread organisms on Earth, yet the true number of their species has been an enduring mystery. This lack of knowledge is detrimental to conservation efforts.

A recent study examined changes in tree canopy cover around California schools. The observed declines could put kids at higher risk of heat stress. When you purchase through links on our site, we may ...

If a tree's rings are studied in a lab but no one hears them, do they make noise in the climate movement? An associate professor of oboe at the University of Arizona wondered. It led her to team up ...

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Science has mixed with holiday magic to safeguard the legacy of a 100-year-old holiday tradition on Fresno’s Christmas Tree ...