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Modelling the demography of agricultural transitions (link is external)

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Using a mathematical model, researchers have shed new light on the transition from hunter-gatherer to farming societies. Rather than focusing exclusively on external factors, they looked at internal demographics and the significant impact of human interactions. The model identified potential societal outcomes based on demographic changes, emphasising aspects such as migration rates, cultural assimilation and the role of mortality in these transitions. The researchers aim to further develop their model with the aim of making it a standard tool for studying historical demographic interactions.

Plant doctor: An AI system that watches over urban trees without touching a leaf (link is external)

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Monitoring urban plant health traditionally requires extensive manual labor and botanical expertise, creating challenges for cities facing expanding green spaces, higher population densities, and increasing threats to plants. Now, researchers have developed 'Plant Doctor,' an artificial intelligence-based tool that could revolutionize plant health monitoring. The proposed system can track individual leaves in urban video footage and precisely quantify the damage from pests and diseases, enabling scalable, non-invasive urban plant management.

How the brain evaluates rewards (link is external)

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Researchers have gained a new understanding of how the brain processes reward and risk information. Neuroscientists show how nerve cells in the so-called amygdala not only encode the probability and magnitude of rewards, but also dynamically process this information to predict value and risk. The findings provide new insights into the neural basis of decision-making and could also be important for understanding mental illnesses such as anxiety disorders and depression.

When it comes to obesity-related cancers, where you shop for food matters (link is external)

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Obesity is at epidemic proportions in the United States where more than 40% of adults are obese and more than 70% are overweight. One common policy intervention to tackle this urgent issue is to try to improve diet quality by increasing local grocery stores that offer healthy options. However, this is not a silver bullet, but researchers are not sure why. A team of researchers developed a novel tool to help understand consumer behavior at the county level, and to study the relationship between where people shop for their food and the risk of obesity-related cancers.

Miso made in space tastes nuttier (link is external)

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Miso is a traditional Japanese condiment made by fermenting cooked soybeans and salt. Researchers successfully made miso on the International Space Station (ISS). They found that the miso smelled and tasted similar to miso fermented on Earth -- just with a slightly nuttier, more roasted flavor. The team hopes this research will help broaden the culinary options available to astronauts, improving the quality of life for long-term space travelers.

First ancient genomes from the Green Sahara deciphered (link is external)

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An international team has sequenced the first ancient genomes from the so-called Green Sahara, a period when the largest desert in the world temporarily turned into a humid savanna-like environment. By analyzing the DNA of two 7,000-year-old naturally mummified individuals excavated in the Takarkori rock shelter in southwestern Libya, the team showed that they belonged to a long-isolated and now extinct North African human lineage.

Researchers explore using soil for heat storage (link is external)

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When spring arrives and the heating season comes to an end, keeping warm becomes less of an issue. However, scientists remind us that it is not just a seasonal necessity -- heat is also a valuable energy resource that can be stored and used when needed most. Researchers have discovered an innovative solution beneath our feet: using soil as an efficient thermal energy storage system.

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