These are halcyon days for health care history in Canada. One routinely sees articles pertaining to health in leading Canadian and international history journals. The Canadian Bulletin of Medical History is a vibrant and important vehicle and there are a growing number of monographs. This essay reviews several of the maturing content areas that now characterize the writing of health history in Canada, including hospital history, nursing history, the history of mental health, and health and medicine in aboriginal settings. This essay seeks to highlight the accomplishments of the field, while reviewing some of the gaps.
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Proc Natl Acad Sci U S A
January 2025
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109.
The NASA Mars 2020 Perseverance Rover Mission has collected samples of rock, regolith, and atmosphere within the Noachian-aged Jezero Crater, once the site of a delta-lake system with a high potential for habitability and biosignature preservation. Between sols 109 and 1,088 of the mission, 27 sample tubes have been sealed, including witness tubes. Each sealed sample tube has been collected along with detailed documentation provided by the Perseverance instrument payload, preserving geological and environmental context.
View Article and Find Full Text PDFPsychol Rev
January 2025
Department of Experimental Psychology, University of Groningen.
Time is a central dimension against which perception, action, and cognition play out. From anticipating when future events will happen to recalling how long ago previous events occurred, humans and animals are exquisitely sensitive to temporal structure. Empirical evidence seems to suggest that estimating time prospectively (i.
View Article and Find Full Text PDFGround Water
January 2025
Department of Civil, Geological, and Environmental Engineering, University of Saskatchewan, Saskatoon, SK, Canada.
Continental glaciations during the Pleistocene Epoch created complex systems of aquifers and aquitards across many northern regions of the Earth. The low hydraulic conductivities of glacial till aquitards suggest that limited recharge will reach the underlying aquifers, potentially preserving old groundwaters. Here, we characterize the recharge history in intertill and buried valley aquifers in Saskatchewan, Canada using C, H, He δH, δO, and major ions.
View Article and Find Full Text PDFMol Ecol
January 2025
Conservation Biology Division, Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Seattle, Washington, USA.
Long homozygous chromosome segments are known as runs of homozygosity (ROH); these reflect patterns of identity by descent and can be used to measure individual inbreeding, map recessive traits, and reconstruct demographic histories. Here, we review some key considerations with ROH detection and the inferences pertaining to inbreeding and demographic analyses in wild populations.
View Article and Find Full Text PDFFront Plant Sci
December 2024
Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou, China.
, native to North America, is an invasive species in many areas of the world, where it causes serious damage to natural ecosystems and economic losses. However, a dearth of genetic resources and molecular markers has hampered our understanding of its invasion history. Here, we assembled 40 complete chloroplast genomes of species, including 21 individuals, 15 individuals, and four individuals, the sizes of which ranged from 152,412 bp to 153,170 bp.
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