One of the most prestigious science journals in the world, PNAS publishes a huge variety of open access science with a particular focus on research of general interest to the public.

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Pride is a highly pleasant emotion; this internal reward can incentivize people to undertake and persevere at costly but socially valued courses of action. Pride has a full-body display featuring an erect and expanded posture and gaze directed at the audience and thus it appears to generate common knowledge about the individual’s enhanced value. This display conveys achievement and dominance, is produced by congenitally blind individuals, and is recognized by young children and by adults across cultures.

All species have an environmental niche, and despite technological advances, humans are unlikely to be an exception. Here, we demonstrate that for millennia, human populations have resided in the same narrow part of the climatic envelope available on the globe, characterized by a major mode around 11°C–15°C mean annual temperature (MAT).

Political opponents respect moral beliefs more when they are supported by personal experiences, not facts.