The Cairo Fossil Forest is the second oldest in the world. These forests mark a turning point in Earth's history because they ...

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 ...

BIG PINE, Calif. (KSWB/KUSI) — Hidden high in the White Mountains of eastern California, a gnarled, weathered tree quietly holds a staggering secret — it’s nearly 5,000 years old. Known as the ...

In coastal Oregon, the state's tallest fir tree is burning. Douglas-firs (Pseudotsuga menziesii) are Oregon's most common trees, but the tree that's ablaze, known as the Doerner Fir, is special.

Wander past topiary shaped like elephants and armchairs, get lost in fields of wildflowers, or marvel at a tree that bears 40 ...