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The Tucson Million Trees initiative, led by Mayor Regina Romero, intends to plant one million trees by 2030 to increase the city’s tree canopy and help mitigate the effects of climate change.

Policymakers and advocates are aiming to correct decades of inequities in urban tree canopy in low-income neighborhoods and communities of color with efforts to create an equitable tree canopy and increase urban forestry efforts. Read more»

Juniper trees, common in Arizona’s Prescott National Forest, have been dying with the drought.

During prolonged droughts and extreme heat waves like the Western U.S. is experiencing, even native trees that are accustomed to the local climate can start to die, and firefighters are closely watching areas with dead or dying trees as another extremely dry year heightens the fire risk. Read more»

Are the needles starting to fall off your Christmas tree? Tired of trying to remember to water it? Is it looking a little more Charlie Brown and a little less "O Tannenbaum?" Tucson's TreeCycle program will recycle trees until Jan. 11. Read more»

Patrick Gonzalez, a climate change scientist with the National Park Service, said a likely increase in future wildfires is among the many changes in the Southwest that could be brought on by climate change.

Arizona saw some of the sharpest increases in average annual temperatures in the Southwest over the 20th century. The drier, hotter conditions not only affect water supplies but have led to conditions that make it more likely the region will experience more wildfires, according to a panel of climate experts. Read more»

Janet Franklin, an Arizona State University geography professor, conducts research at a site in California.

Two researchers at Arizona State University are aiming to help officials manage trees based on how different types are affected by climate change. Janet Franklin, a geography professor, and Pep Serra-Diaz, a postdoctoral researcher, are using computer models to study how quickly a tree species and its habitat will be exposed to climate change. That information is used to locate areas with specific elevations and latitudes where trees could survive and repopulate. Read more»

Are the needles starting to fall off your Christmas tree? Tired to trying to remember to water it? Is it looking a little more Charlie Brown and a little less "O Tannenbaum?" Tucson's TreeCycle program will recycle trees until Jan. 8. Read more»

U.S. and Canadian Christmas trees have flooded into Mexico in recent years, along with increased North American trade in everything from avocados to artisan liquor. Read more» 1

Are the needles starting to fall off your Christmas tree? Tired to trying to remember to water it? The 12 Days of Christmas might not be over (they end with the Feast of the Epiphany on Jan. 5) but some people are ready to take down their trees. Tucson's TreeCycle program will recycle Christmas trees until Jan. 9. Read more»