Definition of Brain Drain. Brain drain can be described as the process in which a country loses its most educated and talented workers to other countries through migration. This trend is considered a problem, because the most highly skilled and competent individuals leave the country, and contribute their expertise to the economy of other countries.
Olives, like many other kinds of produce such as potatoes and sour cherries, just aren't something that you eat raw. Unprocessed, straight off the tree, they are bitter, very bitter, and the green ones even more so than ones which have fully ripened to black.
Pests. Olive trees have minimal natural pests, primarily the olive fruit fly, the med-fly and soft-bodied tree scale. Since the skin of the olive fruit is eaten, it is unwise to spray pesticides, the odors of which sink into the skin and affect the taste of the fruit and olive oil it produces.