That study found L.A.'s tree placement rules are among the nation's strictest, often limiting new planting. The team concluded that substantial changes could be made to existing tree-spacing ...

“Squirrels are remarkably good at what they do,” said John L. Koprowski, co-author of the book “North American Tree Squirrels ...

Many of L.A.'s strict tree-spacing rules are internal guidelines -- not laws -- meaning they could be updated more easily to allow for more trees. Closing L.A.'s shade gap, however, will require ...

That study found L.A.’s tree placement rules are among the nation’s strictest, often limiting new planting. The team concluded that substantial changes could be made to existing tree-spacing ...