We apply an intersectional framework to explore how connections to marginalized communities interact with candidate demographics to shape vote choice in U.S. politics. In an original experiment manipulating candidates’ race, gender, sexuality, and endorsements, we show that endorsements by organizations advocating for marginalized communities shape voter evaluations to the same, if not greater, degree as candidate demographics. Moreover, the effects are particularly pronounced for candidates receiving an endorsement from an LGBT advocacy organization. Attitudes toward marginalized communities are mapped onto candidates with ties to those communities, whether the candidate is a member or not; we call this process associational affect. Identity has a complex role in shaping vote choice, and, absent an investigation of power and interlocking social hierarchies, it alone is insufficient to explain vote choice.

This article explores cartographic methods during the ninth and tenth century of the ‘Abbasid Caliphate, with a focus on the deformation of Sub-Saharan Africa in world maps produced during the early era. It reviews the preceding influences that factored into how ‘Abbasid cartographers understood and mapped out unknown regions alongside pieces of the folkloric fear that accompanied the idea of al-Wāq-Wāq, that is the uncharted and unknown areas of inland Africa south of the Sahara. By reviewing the methods and techniques of map making alongside information that circulated about al-Wāq-Wāq, this article offers a contribution to knowledge about cartographic practices during the ‘Abbassid era and reviews the work of prominent geographers alongside the deformations in their maps and social assumptions they carried about what and who rested within the interiors of Africa.

The main objective of our target article was to sketch the empirical case for the importance of selection at the level of groups on cultural variation. Such variation is massive in humans, but modest or absent in other species. Group selection processes acting on this variation is a framework for developing explanations of the unusual level of cooperation between non-relatives found in our species. Our case for cultural group selection (CGS) followed Darwin's classic syllogism regarding natural selection: If variation exists at the level of groups, if this variation is heritable, and if it plays a role in the success or failure of competing groups, then selection will operate at the level of groups. We outlined the relevant domains where such evidence can be sought and characterized the main conclusions of work in those domains. Most commentators agree that CGS plays some role in human evolution, although some were considerably more skeptical. Some contributed additional empirical cases. Some raised issues of the scope of CGS explanations versus competing ones.

Human cooperation is highly unusual. We live in large groups composed mostly of non-relatives. Evolutionists have proposed a number of explanations for this pattern, including cultural group selection and extensions of more general processes such as reciprocity, kin selection, and multi-level selection acting on genes. Evolutionary processes are consilient; they affect several different empirical domains, such as patterns of behavior and the proximal drivers of that behavior. In this target article, we sketch the evidence from five domains that bear on the explanatory adequacy of cultural group selection and competing hypotheses to explain human cooperation. Does cultural transmission constitute an inheritance system that can evolve in a Darwinian fashion? Are the norms that underpin institutions among the cultural traits so transmitted? Do we observe sufficient variation at the level of groups of considerable size for group selection to be a plausible process? Do human groups compete, and do success and failure in competition depend upon cultural variation? Do we observe adaptations for cooperation in humans that most plausibly arose by cultural group selection? If the answer to one of these questions is “no,” then we must look to other hypotheses. We present evidence, including quantitative evidence, that the answer to all of the questions is “yes” and argue that we must take the cultural group selection hypothesis seriously. If culturally transmitted systems of rules (institutions) that limit individual deviance organize cooperation in human societies, then it is not clear that any extant alternative to cultural group selection can be a complete explanation.

Many agricultural systems around the world are challenged by declining soil resources, a dry climate and increases in input costs. The cultivation of plants that are better adapted than current crop species to nutrient poor soils, a dry climate and low-input agricultural systems would aid the continued profitability and environmental sustainability of agricultural systems. This paper examines herbaceous native Australian legumes for their capacity to be developed as grain crops adapted to dry environments. The 14 genera that contain herbaceous species are Canavalia, Crotalaria, Cullen, Desmodium, Glycine, Glycyrrhiza, Hardenbergia, Indigofera, Kennedia, Lotus, Rhynchosia, Swainsona, Trigonella and Vigna. A number of these genera (e.g., Glycine, Crotalaria, Trigonella and Vigna) include already cultivated exotic grain legumes. Species were evaluated based on the extent to which their natural distribution corresponded to arid and semi-arid climatic regions, as well as the existing information on traits related to harvestability (uniformity of ripening, propensity to retain pod, pod shattering and growth habit), grain qualities (seed size, chemistry, color and the absence of toxins) and fecundity. Published data on seed yield were rare, and for many other traits information was limited. The Australian species of Vigna, Canavalia and Desmodium mainly have tropical distributions and were considered poorly suited for semi-arid temperate cropping systems. Of the remaining genera Glycyrrhiza and Crotalaria species showed many suitable traits, including an erect growth habit, a low propensity to shatter, flowers and fruits borne at the end of branches and moderate to large seeds (5 and 38 mg, respectively). The species for which sufficient information was available that were considered highest priority for further investigation were Glycine canescens, Cullen tenax, Swainsona canescens, Swainsona colutoides, Trigonella suavissima, Kennedia prorepens, Glycyrrhiza acanthocarpa, Crotalaria cunninghamii and Rhynchosia minima.

Gaps often exist between scientific findings and the actions taken by policy makers. In the case of global climate change, the United States has chosen not to act to reduce its greenhouse gas emissions. This is despite warnings from the Intergovernmental Panel on Climate Change that “most of the warming observed over the last 50 years is attributable to human activities,” and that these forces are expected to cause an additional 1.4–5.8°C rise in temperature by 2100.