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Antarctic nematodes survival in Martian and Lunar regolith simulants under terrestrial conditions.
An Acad Bras Cienc
January 2025
Universidade de Brasília, Laboratório de Criptógamas, Departamento de Botânica, Campus Universitário Darcy Ribeiro, Bloco D, 1° Andar, 70910-900 Brasília, DF, Brazil.
The exploration of extraterrestrial environments has become a focal point of scientific inquiry, driven by advancements in technology and a growing interest in the potential for life beyond Earth. This study investigates the adaptability of Antarctic nematodes, known for thriving in extreme cold and isolation, to simulated Martian (MGS-1) and Lunar (LMS-1) soils. The experiment revealed differential responses in nematode survivability to the two simulants, with Lunar soil demonstrating better adaptability compared to Martian soil.
View Article and Find Full Text PDFGenetic Concordance of Staphylococcus aureus From Oropharyngeal and Sputum Cultures in People With Cystic Fibrosis.
Pediatr Pulmonol
January 2025
Stead Family Department of Pediatrics, University of Iowa Carver College of Medicine, Iowa City, Iowa, USA.
Background: People with cystic fibrosis (CF) may not expectorate sputum at young ages or after they receive CFTR modulators. While oropharyngeal swabs are commonly used to test for lower airway pathogens, it is unknown whether Staphylococcus aureus from the oropharynx matches the strain(s) infecting the lungs. Our goal was to determine whether oropharyngeal and sputum isolates of S.
View Article and Find Full Text PDFDormancy in the origin, evolution and persistence of life on Earth.
Proc Biol Sci
January 2025
Indiana University, Bloomington, IN, USA.
Life has existed on Earth for most of the planet's history, yet major gaps and unresolved questions remain about how it first arose and persisted. Early Earth posed numerous challenges for life, including harsh and fluctuating environments. Today, many organisms cope with such conditions by entering a reversible state of reduced metabolic activity, a phenomenon known as dormancy.
View Article and Find Full Text PDFA tale of two planets: Disparate evolutionary models for Mars inferred from radiogenic isotope compositions of Martian meteorites.
Proc Natl Acad Sci U S A
January 2025
Cosmochemistry and Isotope Signatures Group Nuclear and Chemical Sciences Division Lawrence Livermore National Laboratory, Livermore, CA 94550.
The radiogenic isotopic compositions of basaltic Martian meteorites (shergottites) and clinopyroxene/olivine cumulate meteorites (nakhlite/chassignites) are used to define the global evolution of Mars. However, the two main groups of meteorites demonstrate that their sources underwent divergent styles of magmatic evolution. The shergottites portray a planet that differentiated ~4.
View Article and Find Full Text PDF"": physicians' perceptions on climate change information and adaptation strategies - qualitative study in Portugal.
Front Public Health
January 2025
Centre for Functional Ecology - Science for People & the Planet (CFE), TERRA Associate Laboratory, Department of Life Sciences (DCV), University of Coimbra, Coimbra, Portugal.
Background: Climate change presents several challenges to public health and its professionals. This article aims to fill a significant gap in the current literature by understanding physicians' perceptions of their role in educating others about health adaptation to climate change. It also explores their knowledge of health policies related to this issue in Portugal and their perceived influence on the development of adaptation policies at both local and national levels within the health sector.
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