Is there life after death? This question has puzzled humankind from time immemorial. For thousands of years religions the world over have taught that life does not end at death. Ancient Egyptians used to bury boats with their dead for transport to a new life. Medieval Christendom was rife with graphic, "eye-witness" descriptions of heaven and hell. In the West today, many people claim to have seen or heard from the dead; others have "remembered" past...