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.

Genetics alone can’t tell an athlete’s story, not even close. Just look at Peyton and Eli Manning.

The prolongation of life; optimistic studies by Metchnikoff, Elie, 1845-1916; Mitchell, P. Chalmers (Peter Chalmers), Sir, 1864-1945 Publication date 1908 Topics Hygiene, Longevity Publisher New York ...

What began as a simple walk through an old cemetery turned into a journey into deep family ties and hidden history. Join us ...