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The array of processes and organisms that make up the biological carbon pump has immense influence on Earth’s carbon cycle and climate. But there’s still much to learn about how the pump works. 

Sexual assault and sexual harassment (SASH) in STEM is a well-documented problem, particularly in academic and fieldwork settings (NASEM, 2018; Kelly and Yarincik, 2021; Ackerman et al., 2023). Historically marginalized groups in STEM (i.e., white women; Black, Indigenous, and other people of color; LGBTQ+ individuals) are particularly vulnerable to SASH due to underrepresentation and persistent, long-standing cultural norms shaped by dominant male and white identities. For individuals who hold multiple marginalized identities, the risks and impacts are compounded (Cech, 2022). SASH results in negative impacts to individual mental health and physical safety, productivity, and employee retention, and represents a barrier to entry, retention, advancement, and success of a diverse STEM workforce. To address this, culture change within STEM, the process of shifting organizational norms to promote improved employee wellness, inclusion, and productivity, is needed. 

Self-assembly is an important process in biological systems and also a promising avenue toward dynamic and responsive micro- and nano-technologies. This study discusses the non-equilibrium self-assembly of inherently magnetic bacteria oriented perpendicular to a solid surface. An interplay between hydrodynamic and magnetic interactions leads to stable three-dimensional clusters in the long-time regime, which may be programmatically assembled, disassembled, and translated across a surface. The implications of the findings for the rational design of non-equilibrium self-assembly in general are discussed. 

Abstract The ratio of boron to calcium (B/Ca) in a subset of foraminifera has been shown to covary with seawater carbonate chemistry, making this geochemical signature a promising proxy for carbon cycle science. Some studies suggest complications with the B/Ca proxy in photosymbiont‐bearing planktonic foraminifera, while relatively few studies have investigated B/Ca in species that lack large dinoflagellate symbionts. For the first time, we use a sediment trap time series to evaluate B/Ca of subtropical and subpolar planktonic foraminifera species that are asymbiotic (Globigerina bulloidesandNeogloboquadrina incompta) and a species that hosts small intrashell photosymbionts (Neogloboquadrina dutertrei). We find that B/Ca measurements across size fractions indicate overall little to no size‐dependent uptake of boron that has previously been reported in some symbiont‐bearing foraminifera.Neogloboquadrina incomptaandN.dutertreiB/Ca are strongly correlated with calcite saturation, pH, and carbonate ion concentration, which is in good agreement with the limited number of published core top results. WhileG.bulloidesB/Ca trends with seasonal fluctuations in carbonate chemistry, during discrete periods considerable B/Ca offsets occur when a crypticG.bulloidesspecies is known to be seasonally present within the region. We confirm presence and significant B/Ca offset between cryptic species by individual LA‐ICP‐MS analyses. This finding calls into question the use of traditional morphological classification to lump what might be genetically distinct species for geochemical analyses. Our overall results highlight the utility ofG.bulloides,N.incompta, andN.dutertreiB/Ca while bringing to light new considerations regarding divergent geochemistry of cryptic species.