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

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

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

The UA has plenty of special features to offer, but one of its more overlooked aspects is its abundant plant life—specifically, that of the Laboratory of Tree-ring Research. UA’s tree-ring lab right ...

NASA’s Office of STEM Engagement partnered with the U.S. Department of Agriculture Forest Services to fly five species of tree seeds aboard Artemis I, including sweetgums, loblolly pines, sycamores, ...

Trees have special ways to defend themselves against insects, even animals eating their leaves. Learn how trees “talk to each other. Science Trek is available to stream on pbs.org and the free PBS App ...

Leonardo da Vinci seems first to have noticed that widths of tree rings vary in wet and dry years, but there is a big gap between his discovery and a history of tree rings that chronicles Midwest ...

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

Although Ceriporia lacerata fungus causes tree wood to rot, it also has a good side. According to a new study, adding the fungus to agricultural soil allows tomatoes to be grown using much less ...

Tree rings are not just a great record of a tree’s life, but they can preserve a snapshot of the Earth and beyond at different times. Now Australian scientists analyzing these records have found ...