When Jim and Sally Belcher planned a goodbye party for their 100-year-old Cottonwood they didn't expect 60 people to show up.

Truth is, we don’t know how the Tree of Life will fall, and we don’t know when. It could happen in five years, in 40 years, ...

An average maturing tree under optimal conditions can transport up to 10,000 gallons of water only to capture about 1,000 usable gallons for the production of food and adding to its biomass.

Arizona faith leaders gathered in Phoenix to urge humane immigration policies amid concerns over increased federal spending ...

All tree leaves have an outer layer called the epidermis, which can also be used in the identification process. This leaf "skin" always has a waxy cover called the cuticle and varies in thickness.

The most recently designated state symbol is Pennsylvania’s Official state amphibian. No, it’s not a frog or toad, it’s a ...