From Estonia to Antarctica, this once-pagan symbol has taken on many strange forms. In December 1848, an illustration showed Queen Victoria, Prince Albert, and their children admiring a Christmas tree ...

Many of the best artificial Christmas trees are on sale for Cyber Week, including our best overall pick, the National Tree Company Douglas Fir. For more deals, check out our roundup of the best Cyber ...

Christmas trees are the centerpiece of a holiday celebration. Every year, between 25 and 30 million Christmas trees are sold in the United States, according to the National Christmas Tree Association.

Martina Egedusevic receives funding from the Scottish Forestry Trust. Daniel Green works for Heriot-Watt University as an Assistant Professor in Nature-based Solutions. He is also a Research Associate ...

All species on Earth, both living and extinct, are related. We know this because of a biological tool called the tree of life. This "tree" takes the form of a diagram that maps the relationships ...

Ten months ago, a ranger on the Hadrian’s Wall Path discovered a shocking crime: The widely loved Sycamore Gap tree had been chopped down. Fans mourned the loss of a beautiful landmark; arborists ...

Tea tree oil may have benefits for topical use. It may target certain bacteria and support skin health when used as directed. Tea tree oil is an essential oil with several uses, including keeping skin ...

Bristlecone pines in the western U.S. have been alive for nearly 5,000 years, but an upstart Patagonian cypress challenges that record. This 1,400-year-old bristlecone pine on Mount Washington in ...

When a neighbor’s tree hangs over your property it can be a nuisance—and even cause damage. But tread carefully before you trim it. Sometimes it seems like living in a society would be much better if ...

As we hang far above the ground on a sunny October day, it would be easy to focus on the blue crests of hills and the small towns tucked in between. But Richard Peters, who’s with me inside a metal ...