As human groups migrated and settled across Holocene Eurasia, dogs often traveled with them, researchers report in a new genomic study – and sometimes dogs were traded among populations. The study reveals the integral role these animals played in culture and exchange. For at least the last 11,000 years, dogs and humans have lived side-by-side. However, the true antiquity of their association with humans remains elusive. Some evidence suggests that major dog lineages in different parts of the world appear to have diversified thousands of years earlier, suggesting that these dogs may have traveled with humans as they colonized different parts of Europe, Asia, and the Arctic, forming integral parts of the cultural and biological exchanges of early migrations. To explore how dogs and humans moved together, Shao-Jie Zhang and colleagues sequenced 17 ancient dog genomes dated between 9,700 and 870 years ago from sites across Siberia, the Central Eurasian Steppe, and northwest China, regions that experienced major shifts in human ancestry and culture during the Holocene. These new genomes were analyzed alongside 57 previously published ancient dog genomes, 160 modern dog genomes, and 18 ancient human genomes, which allowed Zhang et al. to explore how ancient dog lineages intersected with human migrations and cultural exchanges. The findings show that the movement of domestic dogs across the Eurasian Steppe, East Asia, and Eastern Siberia often coincided with the migrations of hunter-gatherers, farmers, and pastoralists, suggesting that dogs very commonly travelled alongside humans and were integrated into diverse societies. Some mismatches between dog genetic lineage and human population histories indicate that communities with different ancestries likely exchanged dogs with one another. This was particularly true for Arctic-lineage dogs, which were found among hunter-gatherer groups with differing ancestries across Eurasia.

A new study conducted in a U.S. prison suggests that incarcerated men have complex perceptions of staff that stem from previous communications and interactions.

Two leading researchers in the Institute for Biomedical Sciences at Georgia State University have been ranked among the most highly cited in the world, placing in the top 1 percent of all scientists and social scientists, according to the Highly Cited Researchers 2025 list by Clarivate.

A new study finds that while some parents are opposed to the use of AI-generated images in children’s stories, most are willing to accept these images if the text is human-authored and the images have been reviewed by educators, librarians or other experts. However, depending on the nature of the stories, parents and children did raise concerns about errors in the illustrations that might encourage unsafe behavior or lack real-world accuracy.

About The Study: The current analysis illustrates that drug promotion content is frequently posted by individual creators, lacks essential risk information, and bears the hallmarks of undisclosed marketing. These findings suggest that posts circumvented established advertising principles and potentially eroded the fair balance crucial for informed patient decision-making, consistent with prior literature on traditional direct-to-consumer advertising’s impact on prescribing.

In a new study involving 402 U.S.-based primary care physicians, researchers from Northwestern University and the University of Sydney identified a “sweet spot” in clinical decision-making. By presenting just the right number of treatment alternatives in the electronic health record (EHR) system, physicians were more likely to choose a high-quality alternative rather than defaulting to the status quo.