The Christmas holiday is long gone, but trees are still awaiting pickup in parts of Washington, D.C. Dried-up trees were ...

Researchers discovered that our ability to recognize trees in art is linked to a mathematical principle called the branch ...

"Build wooden tabletop Christmas trees for a fun DIY project. Follow me, April Wilkerson, on The Craftistry for more DIY projects and hands-on building!" ...

Grizzly bear Tim enjoys his tree enrichment at Brookfield Zoo Chicago. More than 900 Balsam fir trees used during Brookfield Zoo Chicago’s Holiday Magic event are repurposed every year as mulch, ...

CNN’s Ben Wedeman dives deep underground in Rome to explore the Aqua Virgo, an ancient aqueduct that continues to supply water to the Trevi Fountain and other landmarks.