When West Virginia recently banned seven artificial food dyes in products to be sold within their borders, they joined an increasing number of individual U.S. states issuing their own regulations about food manufacturing practices, allowable ingredients, or product labeling. Consequently, food manufacturers must decide how to deal with different requirements in multiple markets. A new study from the University of Illinois Urbana-Champaign examines the various ways manufacturers respond to state regulations and what drives their choices.

Are there areas of the brain, which regulate prosocial, altruistic behaviour? Together with colleagues from the universities in Lausanne, Utrecht and Cape Town, researchers from Heinrich Heine University Düsseldorf (HHU) have studied a very special group of patients and established that the “basolateral amygdala” (part of the limbic system) plays an important role in this. In the scientific journal Proceedings of the National Academy of Sciences (PNAS), they describe that this region calibrates social behaviour.

We’re living in a period where the gap between rich and poor is dramatic, and it’s continuing to widen. But inequality is nothing new. In a new study published in the journal PNAS, researchers compared house size distributions from more than 1,000 sites around the world, covering the last 10,000 years. They found that while inequality is widespread throughout human history, it’s not inevitable, nor is it expressed to the same degree at every place and time.