Social Behaviour Evolved from Adapting to Extreme Cold, Study in Primates Finds:

A new study on primates suggests that social behavior, such as forming
close-knit communities, may have evolved as an adaptation to extreme cold
weather conditions. Researchers studying macaque monkeys in the Himalayas
discovered that individuals living in colder climates exhibited stronger
social bonds compared to those in warmer regions. This phenomenon is
believed to have evolved as a survival strategy to cope with the challenges
of extreme cold. The findings provide valuable insights into the
evolutionary origins of social behavior in primates, shedding light on how
environmental factors shape social structures. Understanding these
mechanisms may contribute to a deeper understanding of human social
behavior and its evolutionary roots.