Commuters on the Blue Line should expect delays Wednesday morning due to a fallen tree near the E Street Station in Chula Vista, which is causing a service disruption along the line.

Researchers have released the first parcel-level analysis to map all paved surfaces across L.A. County. In particular, large parking lots are ripe for change, they say.

But thanks in part to trees planted in areas where the two fungi don’t grow well, the American chestnut isn’t extinct. And efforts to revive it in its native range have continued, despite the long ...

An arborist can diagnose disease and pest problems, schedule seasonal treatments for trees, and selectively prune your trees in a way that will strengthen them rather than shortening their lifespan.