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3 days ago · The NASA definition of life, “Life is a self-sustaining chemical system capable of Darwinian evolution” and considered the specific features of the one life we know —Terran life. Background from The Limits of Organic Life in Planetary Systems.
Mar 9, 2021 · Scientists have struggled to formulate a universal definition of life. Is it possible they don’t need one?
Jun 20, 2019 · A new definition of life is proposed and discussed in the present article. It is formulated by modifying and extending NASA’s working definition of life, which postulates that life is a “self-sustaining chemical system capable of Darwinian evolution”.
- Marko Vitas, Andrej Dobovišek
- 2019
Nov 2, 2023 · Life is a process because it is the result of coordinated actions (metabolism, gene expression, energy production and consumption, etc.), which occur within the living system and result in biological changes, such as growth, reproduction, evolution, and death.
- The Case of Luisi’s Team
- Evolving Definitions
- General Roles and Applications in Different Fields at The Frontiers of Biology
Luisi has been a leading scientist at the crossroads of some of the fields mentioned above, and since the early 90’s he has made explicit use of definitions of life. In his work, definitions play a fundamental instrumental role in informing experimental research and in the generation of novel knowledge: According to Luisi’s pragmatic view, definiti...
An important aspect of operational definitions is that they are revisable in response to challenges, new insights, or criticisms that point to weak spots of the theory on which they are based. Definitions, as employed by Luisi and colleagues, have changed over time following the results of theoretical reflection and experimental research. For examp...
The case of Luisi’s group shows that definitions are used and can be useful as operational tools to guide research in Origins of Life and Synthetic Biology. More generally, definitions can play a theoretical, epistemological, practical, and even ethical roleFootnote 15 in several disciplines at the frontiers of biology. Their content can range from...
- Leonardo Bich, Sara Green
- 2018
4 days ago · Institute for Science and Technology (Gainesville, FL), explores the various definitions of life popular in the astrobiology community and how each is connected to a “theory of life.” In the essay “Defining Life,” Benner describes how chemical structures capable of Darwinian evolution might be useful as universal biosignatures.
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Do attempts to define life help to understand the origin of life?
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4 days ago · What is life? In this interview, Gerald Joyce of the Scripps Research Institute reveals why it’s been so hard for scientists to come up with a definition that encompasses the multiple dimensions of life as we know it.
