Results 31 to 40 of about 2,457 (208)

New Experiments on Abiogenesis [PDF]

open access: greenNature, 1873
HAVING occupied myself for some time past with an experimental study of abiogenesis, I have followed with much interest the controversies on that question in recent numbers of NATURE, and beg leave therefore to state to the readers of this journal the results of my experiments, which form in my opinion a not unimportant contribution to the solution of ...
David Huizinga
openalex   +3 more sources

Geochemical and Photochemical Constraints on S[IV] Concentrations in Natural Waters on Prebiotic Earth

open access: yesAGU Advances, Volume 4, Issue 6, December 2023., 2023
Abstract Aqueous S[IV] species (HSO3− ${\mathrm{H}\mathrm{S}\mathrm{O}}_{3}^{-}$, SO32− ${\mathrm{S}\mathrm{O}}_{3}^{2-}$) derived from volcanogenic atmospheric SO2 are important to planetary habitability through their roles in proposed origins‐of‐life chemistry and influence on atmospheric sulfur haze formation, but the early cycling of S[IV] is ...
Sukrit Ranjan   +8 more
wiley   +1 more source

A Statistical Estimation of the Occurrence of Extraterrestrial Intelligence in the Milky Way Galaxy

open access: yesGalaxies, 2021
In the field of astrobiology, the precise location, prevalence, and age of potential extraterrestrial intelligence (ETI) have not been explicitly explored.
Xiang Cai   +3 more
doaj   +1 more source

Fluid-Deposition of Rocks is Natural Model for Additive Production [PDF]

open access: yesInterdisciplinary Description of Complex Systems, 2017
All created in the Nature is the result of natural technology. Solutions from Nature can be incentive for artificial, man's technology of living (biotechnology) and technology of abiogenesis.
Igor Čatić   +4 more
doaj   +1 more source

Evolution of Realistic Organic Mixtures for the Origins of Life through Wet–Dry Cycling

open access: yesSci, 2022
One of the challenges in understanding chemical evolution is the large number of starting organics and environments that were plausible on early Earth. Starting with realistic organic mixtures and using chemical analyses that are not biologically biased,
Kiernan Foster   +4 more
doaj   +1 more source

Inference on the Nature and the Mass of Earth's Late Veneer from Noble Metals and Gases [PDF]

open access: yes, 2001
Noble metals and gases are very sensitive to the late accretion to the Earth of asteroids and comets. We present mass balance arguments based on these elements that indicate that 0.7E22-2.7E22 kg of extraterrestrial bodies struck the Earth after core ...
Allègre   +81 more
core   +2 more sources

Fatty Acid Vesicles as Hard UV-C Shields for Early Life

open access: yesFoundations, 2023
Theories on life’s origin generally acknowledge the advantage of a semi-permeable vesicle (protocell) for enhancing the chemical reaction–diffusion processes involved in abiogenesis.
Iván Lechuga, Karo Michaelian
doaj   +1 more source

Abiogenesis in Upper Secondary Biology Curricula [PDF]

open access: hybridEvolution: Education and Outreach, 2010
Biological evolution and abiogenesis are distinct branches of science, although they are closely related in the context of a holistic evolutionary conceptual framework. The relationship between evolution and abiogenesis furnishes profound insights into the nature of science, a much emphasised aspect of modern science education.
Barend Vlaardingerbroek
openalex   +2 more sources

The Theory of Evolution is Not an Explanation for the Origin of Life [PDF]

open access: yes, 2010
The propagation of misconceptions about the theory of biological evolution must be addressed whenever and wherever they are encountered. The recent article by Paz-y-Mino and Espinoza in this journal contained several such misconceptions, including: that ...
Clough, Michael   +5 more
core   +3 more sources

On the Evolution of the Biological Framework for Insight

open access: yesPhilosophies, 2021
The details of abiogenesis, to date, remain a matter of debate and constitute a key mystery in science and philosophy. The prevailing scientific hypothesis implies an evolutionary process of increasing complexity on Earth starting from (self ...
Claudio Neidhöfer
doaj   +1 more source

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