Results 81 to 90 of about 5,730,658 (292)

Compression‐Expansion: Miniaturization, Modularity, and Logistics Beyond Earth

open access: yesAmerican Anthropologist, EarlyView.
ABSTRACT If the Cold War space race culminated in a return to Earth, at present we are experiencing a renewed interest in space. Drawing on fieldwork among people working in the space sector in Sweden, this article focuses on some of the imaginaries underpinning this resurgence and the contemporary commercialization of space. Specifically, I hone in on
Chakad Ojani
wiley   +1 more source

A History of the Extraterrestrial Life Debate [PDF]

open access: yesZygon: Journal of Religion and Science, 1997
From antiquity to the present, humans have debated whether intelligent life exists elsewhere in the universe. This presentation will survey this debate, examining the roles played in it by science, religion, philosophy, and other areas of human learning. One thesis that will be developed is that whether or not extraterrestrials exist, ideas about them
openaire   +1 more source

Comparison of Two Methods for Determination of Rhenium and Platinum‐Group Elements in Meteorites Using On‐Line and Off‐Line Matrix Separation Modes

open access: yesGeostandards and Geoanalytical Research, EarlyView.
Key Points PEEK tubing has been observed to adsorb Pd and Pt ions, resulting in significantly reduced recoveries of Pd and Pt elements. HPA‐S provides a more effective dissolution for meteorite samples than Carius tube digestion, resulting in higher mass fractions for PGE.
Yuling Zeng   +2 more
wiley   +1 more source

Six ‘Must-Have’ Minerals for Life’s Emergence: Olivine, Pyrrhotite, Bridgmanite, Serpentine, Fougerite and Mackinawite

open access: yesLife, 2020
Life cannot emerge on a planet or moon without the appropriate electrochemical disequilibria and the minerals that mediate energy-dissipative processes. Here, it is argued that four minerals, olivine ([Mg>Fe]2SiO4), bridgmanite ([Mg,Fe]SiO3), serpentine (
Michael J. Russell, Adrian Ponce
doaj   +1 more source

Geochemistry and the Origin of Life: From Extraterrestrial Processes, Chemical Evolution on Earth, Fossilized Life’s Records, to Natures of the Extant Life

open access: yesLife, 2018
In 2001, the first author (S.N.) led the publication of a book entitled “Geochemistry and the origin of life” in collaboration with Dr. Andre Brack aiming to figure out geo- and astro-chemical processes essential for the emergence of life.
S. Nakashima   +4 more
semanticscholar   +1 more source

Breeding 5.0: Artificial intelligence (AI)‐decoded germplasm for accelerated crop innovation

open access: yesJournal of Integrative Plant Biology, EarlyView.
ABSTRACT Crop breeding technologies are vital for global food security. While traditional methods have improved yield, stress tolerance, and nutrition, rising challenges such as climate instability, land loss, and pest pressure now demand new solutions.
Jiayi Fu   +4 more
wiley   +1 more source

LIFE IN EXTRATERRESTRIAL ENVIRONMENTS [PDF]

open access: yes
Life in extraterrestrial environments - simulation of martian environment and survival of ...
Hagen, C. A.
core   +1 more source

The Mission (Im)possible of Climate Action through Quixotic Institutional Work

open access: yesJournal of Management Studies, EarlyView.
Abstract The ‘iron cage’ of the (neo‐) liberal‐capitalist system prioritizes economic returns over climate protection. Formerly powerful nation‐states are subordinated to the rule of markets, whereas business elites have been freed from substantial responsibility for social and environmental concerns.
Giuseppe Delmestri, Elke S. Schuessler
wiley   +1 more source

Autocatalytic Selection as a Driver for the Origin of Life

open access: yesLife
Darwin’s theory of evolution by natural selection was revolutionary because it provided a mechanism by which variation could be selected. This mechanism can only operate on living systems and thus cannot be applied to the origin of life. Here, we propose
Mike P. Williamson
doaj   +1 more source

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