AILINCOM 
CursusA new study has shown that adult primates’ tendency to engage in play is determined not by their physical characteristics, but by the social structure of their group: play persists where equality and tolerance prevail. In hierarchical societies, such interactions disappear because the risks outweigh the potential benefits.
CursusSome pollinators, such as hummingbirds, receive small amounts of ethanol from nectar every day, yet they show no signs of intoxication. This may indicate that they have developed a tolerance to alcohol over the course of evolution.
SalusScientists have taken a step toward creating painkillers that effectively relieve pain without the dangerous side effects typical of modern opioids. These new discoveries could lead to safer methods for treating chronic pain.
SalusAbout 22% of young Americans use cannabis or alcohol to improve their sleep, but experts warn that these methods can actually worsen sleep quality and lead to additional health problems.