Results 31 to 40 of about 2,618 (222)

Microfluidic Reactors for Carbon Fixation under Ambient-Pressure Alkaline-Hydrothermal-Vent Conditions

open access: yesLife, 2019
The alkaline-hydrothermal-vent theory for the origin of life predicts the spontaneous reduction of CO2, dissolved in acidic ocean waters, with H2 from the alkaline vent effluent.
Victor Sojo   +4 more
doaj   +1 more source

The origin of life: what we know, what we can know and what we will never know [PDF]

open access: yesOpen Biology, 2013
The origin of life (OOL) problem remains one of the more challenging scientific questions of all time. In this essay, we propose that following recent experimental and theoretical advances in systems chemistry, the underlying principle governing the ...
Addy Pross, Robert Pascal
doaj   +1 more source

Biblical Perspectives as a Guide to Research on Life’s Origin and History

open access: yesReligions, 2023
The more than thirty spacetime theorems developed over the past five decades establish that the universe and its spacetime dimensions have emerged from a cause/causal agent beyond the cosmos.
Hugh Norman Ross
doaj   +1 more source

Quantifying the Origins of Life on a Planetary Scale [PDF]

open access: yes, 2015
A simple, heuristic formula with parallels to the Drake Equation is introduced to help focus discussion on open questions for the origins of life in a planetary context. This approach indicates a number of areas where quantitative progress can be made on
Cronin, Leroy, Scharf, Caleb
core   +2 more sources

Straightforward Creation of Possibly Prebiotic Complex Mixtures of Thiol-Rich Peptides

open access: yesLife, 2023
At the origin of life, extremely diverse mixtures of oligomers and polymers could be obtained from relatively simple molecular bricks. Here, we present an example of the polymerization of two amidonitriles derived from cysteine, Cys-Ala-CN and Cys-Met-CN.
Ibrahim Shalayel   +3 more
doaj   +1 more source

Physical constraints on the likelihood of life on exoplanets [PDF]

open access: yes, 2017
One of the most fundamental questions in exoplanetology is to determine whether a given planet is habitable. We estimate the relative likelihood of a planet's propensity towards habitability by considering key physical characteristics such as the role of
Lingam, Manasvi, Loeb, Abraham
core   +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

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