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Immortality. The Fountain of Eternal Life in Cleveland, Ohio, United States, is described as symbolizing "Man rising above death, reaching upward to God and toward Peace." [1] Immortality is the concept of eternal life. [2] Some species possess ' biological immortality ' due to an apparent lack of the Hayflick limit. [3][4]
Biological immortality. Biological immortality (sometimes referred to as bio-indefinite mortality) is a state in which the rate of mortality from senescence (or aging) is stable or decreasing, thus decoupling it from chronological age. Various unicellular and multicellular species, including some vertebrates, achieve this state either ...
Quantum immortality refers to the subjective experience of surviving quantum suicide. This concept is sometimes conjectured to be applicable to real-world causes of death as well. [1][2] As a thought experiment, quantum suicide is an intellectual exercise in which an abstract setup is followed through to its logical consequences merely to prove ...
Some organisms experience negligible senescence, even exhibiting biological immortality. These include the jellyfish Turritopsis dohrnii, [79] the hydra, and the planarian. Unnatural causes of death include suicide and predation. Of all causes, roughly 150,000 people die around the world each day. [47]
An immortalised cell line is a population of cells from a multicellular organism that would normally not proliferate indefinitely but, due to mutation, have evaded normal cellular senescence and instead can keep undergoing division. The cells can therefore be grown for prolonged periods in vitro. The mutations required for immortality can occur ...
v. t. e. Ageing (or aging in American English) is the process of becoming older. The term refers mainly to humans, many other animals, and fungi, whereas for example, bacteria, perennial plants and some simple animals are potentially biologically immortal. [1]
Philosophy of death. In ethics and other branches of philosophy, death poses difficult questions, answered differently by various philosophers. Among the many topics explored by the philosophy of death are suicide, capital punishment, abortion, personal identity, immortality and definition of death. [1][2]
Immortality is a common theme in fiction. The concept has been depicted since the Epic of Gilgamesh, the oldest known work of fiction. Originally appearing in the domain of mythology, it has later become a recurring element in the genres of horror, science fiction, and fantasy. For most of literary history, the dominant perspective has been ...