Forests provide myriad benefits, including timber, wildlife attraction, local cooling and climate resilience. At the ...

The vast majority of forest restorations contain just one tree species—leaving them vulnerable to pests like the emerald ash ...

Editor's note: This story was originally published on Dec. 18, 2017. The wishes scribbled and stapled to Winterhaven's Wishing Tree each year actually double as data for a science project that began ...

Northern Arizona University has been a notable educational leader in combining quality education with ambitious sustainability goals, and initiatives like the student-led Tree Inventory project and ...

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 ...