Science & Health Summary

Recent studies have shed light on various public health and scientific issues impacting communities. One concerning finding comes from a study analyzing data from over six million people, which indicates that neighborhoods near cannabis retailers experience a rise in cannabis-related emergency visits.

This research highlights the potential health implications of proximity to cannabis shops, suggesting a need for further investigation into their impact on community health. Another intriguing development in neuroscience reveals that repeated head impacts can disrupt the brain's cleaning system, which is vital for removing waste.

This research, conducted on professional fighters, shows that while this system may initially react more robustly to trauma, it ultimately functions less effectively over time. Such findings underscore the importance of understanding the long-term effects of head injuries, particularly in contact sports.

In the realm of brewing science, researchers from ETH Zurich have discovered the long-sought formula behind stable beer foam. This seven-year study provides insights into the physical mechanisms that different types of beer use to maintain their foam, which could have significant implications for the brewing industry.

Lastly, a study on the evolution of dreams across the lifespan suggests that dreams change significantly from childhood to old age. Research indicates that the content and emotional tone of dreams vary widely, reflecting the different experiences and psychological states associated with various life stages.

These findings contribute to our understanding of human psychology and may open avenues for further exploration into how dreams relate to our mental health as we age.