Immortality
Immortality is the idea of living without death. In scientific discussions, it is often differentiated from the broader notion of extension of life. Biological immortality refers to aging being negligible or absent, so that an organism does not die from senescence, though it can still die from injury, disease, or accident. Absolute immortality would imply immunity to all causes of death.
Some organisms show signs of negligible senescence or have been described as biologically immortal. Hydras, some
Research in biogerontology focuses on extending healthy life and delaying aging. Approaches include caloric restriction, senolytic
Ethical, social, and philosophical questions accompany longevity research. Potential implications include resource distribution, inequality in access
In culture, immortality appears in myth, religion, philosophy, and science fiction, ranging from eternal life in