What are the tallest trees in the world? These 10 skyscraping superstars are some of the stalwart examples of their species.

“Old Glory,” a roughly 400-year-old Valley Oak tree in Stevenson Ranch, became a Los Angeles County Historic Landmark this week. But it wasn’t always a walk in the park to protect the ...

News National recognition for Holden Arboretum, home to some really, really old trees Published: May. 30, 2025, 2:03 p.m.