The oldest scriptures at the heart of every major religion make reference to a mysterious tree at the center of the world. Its fruits, guarded by an evil serpent, confer immortality. A nearby stream of water divides into four rivers flowing into the four cardinal directions. The vicinity of this tree is said to be the birthplace of the first human ancestors. This legend is the oldest, most widely dispersed, and most mysterious religious idea known to mankind. The Tree also appears with other symbols on artifacts found at the ancient city of Troy and on the oldest examples of Greek ceramic...