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Community-based participatory research (CBPR) is a framework to improve social equity by engaging communities as equal partners in research design, conduct, and knowledge creation. While CBPR has seen increasing application in Arctic regions, its use in Greenland has been limited by logistical, linguistic, and historical challenges, including community fatigue from extractive research practices. This manuscript details a CBPR-informed approach used to conduct an exploratory study on fertility, reproductive health, and climate adaptation in the Kalaallit community of Paamiut. The study aimed to understand the socio-environmental factors influencing fertility decisions amid economic and environmental changes. We report on nine strategies used to conduct equitable health and socio-ecological research in Greenland guided by the principles of CBPR. Using CBPR principles improved trust, participant recruitment, and the creation of community-valued research products in Paamiut. While time and funding limitations constrained full implementation of CBPR best practices, this study highlights the potential of CBPR to improve equity in Greenlandic research. Using CBPR principles to guide community-engaged research in Greenland provides a concrete and actionable way for students or early-career researchers to promote equitable relationships despite resource limitations. The methods described can be applied across other research disciplines to continue building trust and sustainability in international research partnerships in Greenland. 

Abstract We report the discovery of (Al,Cu)‐bearing metallic alloys in two micrometeorites found in the Project Stardust collection gathered from urban rooftop environments in Norway. Most of the alloys are the same as those found in the Khatyrka meteorite and other micrometeorites, though one has a composition that has not been reported previously. Oxygen isotope ratio measurements using secondary ion mass spectrometry show that the Project Stardust samples reported here, like all earlier examples of natural (Al,Cu)‐bearing alloys, contain material of chondritic affinity. 

Treating the brain is challenging due to the restrictive blood–brain barrier, and modulus-mismatched implants often cause problems. Herein, we have fabricated copolymer hydrogels from thermoresponsive polymer, poly(N-isopropylacrylamide) (PNIPAAm), -r-hydrophilic polymer, poly(acrylic acid) (PAA), which are injectable and transform into soft implants above their lower critical solution temperature (LCST). PAA concentration can be leveraged to tune the LCST and viscosity of the PNIPAAm–r–PAA hydrogel in solution. Furthermore, the Young’s moduli of these materials, ranging from 1-4 kPa, are close to rat and human brain tissue, potentially leading to less inflammation and rejection due to significant modulus mismatch. 

Abstract ContextThe interaction between topography and wind influences snow cover patterns, which can determine the distribution of species reliant on snow-free habitats. Past studies suggest snow accumulation creates suboptimal breeding habitats for Adélie penguins, leading to colony extinctions. However, evidence linking snow cover to landscape features is lacking. ObjectivesWe aimed to model landscape-driven snow cover patterns, identify long-term weather changes, and determine the impact of geomorphology and snow conditions on penguin colony persistence. MethodsWe combined remotely sensed imagery, digital surface models, and > 30 years of weather data with penguin population monitoring from 1975 to 2022 near Palmer Station, west Antarctic Peninsula. Using a multi-model approach, we identified landscape factors driving snow distribution on two islands. Historic and current penguin sub-colony perimeters were used to understand habitat selection, optimal habitat features, and factors associated with extinctions. ResultsDecadal and long-term trends in wind and snow conditions were detected. Snow accumulated on lower elevations and south-facing slopes driven by the north-northeasterly winds while Adélie penguins occupied higher elevations and more north-facing slopes. On Torgersen Island, sub-colonies on south aspects have gone extinct, and only five of the 23 historic sub-colonies remain active, containing 7% of the 1975 population. Adélie penguins will likely be extinct on this island in < 25 years. ConclusionsAdélie penguin populations are in decline throughout the west Antarctic Peninsula with multiple climate and human impacts likely driving Adélie penguins towards extinction in this region. We demonstrate precipitation has detrimental effects on penguins, an often overlooked yet crucial factor for bird studies. 

Abstract Transcription factors carry long intrinsically disordered regions often containing multiple activation domains. Despite numerous recent high‐throughput identifications and characterizations of activation domains, the interplay between sequence motifs, activation domains, and regulator binding in intrinsically disordered transcription factor regions remains unresolved. Here, we map sequence motifs and activation domains in anArabidopsis thalianaNAC transcription factor clade, revealing that although sequence motifs and activation domains often coincide, no systematic overlap exists. Biophysical analyses using NMR spectroscopy show that the long intrinsically disordered region of senescence‐associated transcription factor ANAC046 is devoid of residual structure. We identify two activation domain/sequence motif regions, one at each end that both bind a panel of six positive and negative regulator domains from biologically relevant regulators promiscuously. Binding affinities measured using isothermal titration calorimetry reveal a hierarchy for regulator binding of the two ANAC046 activation domain/sequence motif regions defining these as regulatory hotspots. Despite extensive dynamic intramolecular contacts along the disordered chain revealed using paramagnetic relaxation enhancement experiments and simulations, the regions remain uncoupled in binding. Together, the results imply rheostatic regulation by ANAC046 through concentration‐dependent regulator competition, a mechanism likely mirrored in other transcription factors with distantly located activation domains. 

Abstract Historical accounts suggest that Euro-American agricultural practices (post–1850 CE) accelerated soil erosion in the Paleozoic Plateau of the Upper Mississippi River Valley (USA). However, the magnitude of this change compared to longer-term Late Pleistocene rates is poorly constrained. Such context is necessary to assess how erosion rates under natural, high-magnitude climate and eco-geomorphic change compare against Euro-American agricultural erosion rates. We pair cosmogenic 10Be analyses and optically stimulated luminescence (OSL) ages from samples of alluvium to build a paleoerosion-rate chronology for Trout Creek in southeastern Minnesota (USA). Erosion rates and their associated integration periods are 0.069–0.073 mm yr−1 (32–20 ka), 0.049 mm yr−1 (28–14 ka), and 0.053 mm yr−1 (14–0 ka). Based on previous studies, we relate these rates to (1) the transition from forest to permafrost at the onset of the Last Glacial Maximum, (2) the decline of permafrost coupled with limited vegetation, and (3) climate warming and vegetation re-establishment. These pre-settlement erosion rates are 8× to 12× lower than Euro-American agricultural erosion rates previously quantified in the region. Despite a limited sample size, our observed rapid increase in erosion rates mirrors other sharply rising anthropogenic environmental impacts within the past several centuries. Our results demonstrate that agricultural erosion rates far exceed climate-induced erosion-rate magnitude and variability during the shift from the last glaciation into the Holocene. 

This study explored linkages between natural resources and determinants of fertility decisions in Greenland. Interviews were conducted with 26 policymakers and key stakeholders in two communities about climate adaptation, hunting and fishing, economic development, and fertility and reproductive health. Participants link fertility outcomes to disparate community socioeconomic circumstances that affect individual access to education and financial mobility. Workforce and education challenges in Greenland limit ability to expand culturally grounded reproductive healthcare. Coordinating healthcare, education, and housing policy may improve material resources to support fertility decisions in Greenland. We contextualize drivers of fertility decisions within Greenland's climate adaptation policy options.