A good question and the scriptures in the Bible indicate that man will live only one life in the flesh, as opposed to some religious beliefs of reincarnation and many lives beyond the present one. There are those who experience events that they somehow know that they have lived in another life in the past. Books have been written on the subject and movies have been made on such accounts. In my opinion the times experienced by some may be actual genetically linked events from their heirs and some how programmed into their DNA. It may seem that they lived another life and in another time, yet I do not believe that it is possible. As for as the future, we are all a part of the earth from which we all got our start, the soil and single celled organisms that were created and became what we see about us. We are still children of God, no matter how we look and think. A part and parcel of the cosmos and all one and the same.