A British Columbia rainforest, where Douglas firs soar more than 160 feet, supports 23 native tree species. Diàna Markosian I’m walking in the Eifel Mountains in western Germany, through cathedral-like groves of oak and beech, and

As a person gets older, changes occur in all parts of the body, including the brain. Read these articles to learn how to help keep your brain as healthy as possible as you age. Cognitive