The concept of a biosignature is widely used in astrobiology to suggest a link between some
observation and a biological cause, given some context. The term itself has been defined …

Modern life is essentially homochiral, containing D-sugars in nucleic acid backbones and L-
amino acids in proteins. Since coded proteins are theorized to have developed from a …

Here, we review the contributions of Professor Barbara Sherwood Lollar to Compound
Specific Isotope Analysis (CSIA) in contaminant hydrogeology and environmental chemistry …

A central question in origins of life research is how non-entailed chemical processes, which
simply dissipate chemical energy because they can do so due to immediate reaction kinetics …

Abstract Craters of the Moon National Monument and Preserve (CotM) is a strong terrestrial
analog for lava tube formations on Mars. The commonality of its basalt composition to …

The emergence of life from nonlife, or abiogenesis, remains a fundamental question in
scientific inquiry. In this article, we investigate the probability of the origin of life (per …

The Origins, Spectral Interpretation, Resource Identification, and Security Regolith Explorer
(OSIRIS-REx) spacecraft arrived at its target, near-Earth asteroid 101955 Bennu, in …

Thioamide bonds are important intermediates in prebiotic chemistry. In cyanosulfidic
prebiotic chemistry, they serve as crucial intermediates in the pathways that lead to the …

Systems thinking/analysis is widely applied for solving complex problems in engineering
and certain other fields. Astrobiology, which inherently involves complex problems, can …

The binary nature of life is deeply ingrained in daily experiences, evident in the stark
distinctions between life and death and the living and the inert. While this binary perspective …