Results 51 to 60 of about 2,457 (208)
Journal for the Theory of Social Behaviour, Volume 55, Issue 4, December 2025.ABSTRACT Humanity seems stuck on different ways to fail to meet the challenge posed by a declared climate emergency and manifest problems of ecological breakdown. Rather than reprise these failures, we use the Fermi Paradox and simulation hypothesis to make a simple point about agency. The argument unfolds in two sections.
Jamie Morgan
wiley +1 more source
From Cosmos to Intelligent Life: The Four Ages of Astrobiology
, 2012 The history of life on Earth and in other potential life-bearing planetary platforms is deeply linked to the history of the universe. Since life as we know it relies on chemical elements forged in dying heavy stars, the universe needs to be old enough ...
Abel +17 more
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A stepwise emergence of evolution in the RNA world
FEBS Letters, Volume 599, Issue 19, Page 2706-2717, October 2025.How did biological evolution emerge from chemical reactions? This perspective proposes a gradual scenario of self‐organization among RNA molecules, where catalytic feedback on random mixtures plays the central role. Short oligomers cross‐ligate, and self‐assembly enables heritable variations. An event of template‐externalization marks the transition to
Philippe Nghe
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The Astrophysical JournalA wide variety of scenarios for the origin of life have been proposed, with many influencing the prevalence and distribution of biosignatures across exoplanet populations.
Martin Schlecker +7 more
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Life's Chirality From Prebiotic Environments
, 2012 A key open question in the study of life is the origin of biomolecular homochirality: almost every life-form on Earth has exclusively levorotary amino acids and dextrorotary sugars. Will the same handedness be preferred if life is found elsewhere?
Gleiser, Marcelo, Walker, Sara Imari
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Field-control, phase-transitions, and life's emergence [PDF]
, 2012 Instances of critical-like characteristics in living systems at each organizational level as well as the spontaneous emergence of computation (Langton), indicate the relevance of self-organized criticality (SOC).
Mitra, A. N., Mitra-Delmotte, Gargi
core +3 more sources
FEBS Letters, Volume 599, Issue 19, Page 2693-2705, October 2025.The amyloid world hypothesis of the origin‐of‐life posits that the first functional polymers on the early Earth were structurally stable cross‐β‐sheet‐based peptide amyloids capable of Darwinian‐like evolution. Peptide amyloids display self‐replication and information transfer, as well as catalytic, adaptive, and evolutive properties.
Carl Peter J. Maury
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The Origin of Life from Primordial Planets
, 2010 The origin of life and the origin of the universe are among the most important problems of science and they might be inextricably linked. Hydro-gravitational-dynamics (HGD) cosmology predicts hydrogen-helium gas planets in clumps as the dark matter of ...
Gibson, Carl H. +2 more
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Natural Radioactivity and Chemical Evolution on the Early Earth: Prebiotic Chemistry and Oxygenation
Molecules, 2022 It is generally recognized that the evolution of the early Earth was affected by an external energy source: radiation from the early Sun. The hypothesis about the important role of natural radioactivity, as a source of internal energy in the evolution of
Boris Ershov
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Christian Bohr. Discoverer of Homotropic and Heterotopic Allostery
Acta Physiologica, Volume 241, Issue S734, July 2025.ABSTRACT This essay recounts and revisits the scientific contributions of Christian Bohr, highlighting his pivotal role in discovering allostery about 120 years ago. Bohr's meticulous experimentation led to identifying two distinct forms of allostery: homotropic (single‐ligand) and heterotropic (multi‐ligand), the latter widely recognized as the Bohr ...
Niels Bindslev
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