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?

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Every time arctic air drops south, and temperatures plummet well below zero, social media lights up with a scary (and ...

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 ...

The reason why so many tree species can coexist in species-rich forests has long been a subject of debate in ecology. This question is key to understanding the mechanisms governing the dynamics and ...

In the days since last week's fatal landslides at Mount Maunganui, there has been widespread discussion about what may have caused the slopes above the campground to fail, including the possible role ...

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 ...

Joshua trees are weird. I say this as an expert on Joshua trees. Joshua trees look weird — their twisty branches end in bouquets of stiff, knife-like leaves, which die back to hang from the branches ...