When you admire a towering oak or a vibrant maple in your backyard, you're only seeing half the picture. Beneath the surface lies a sprawling, intricate world that is arguably more fascinating than ...

Palo Alto loves trees — it has about 66,000 of them, about one per resident. Our city is responsible for the upkeep of about 46,000 trees in parks and public areas; almost 38,000 of them are street ...

We are in the middle of a very hot summer. As I was mowing the yard this weekend, I stopped to take a break in the shade of the swamp chestnut oak tree in my front yard. I started thinking about the ...