The bright plumage of a male tanager bird is a signal of evolutionary fitness that makes him more attractive to females. Traditionally, they get their bright colours from the carotenoids (pigments) of the fruit they eat, but researchers have discovered that some males may be changing the structure of their feathers to suit the preferences of their species. It would seem that the birds are prioritising their vanity over functionality, as with these colour changes come sacrifices, such as the ability to easily repel water. Read full article here
Societal Issues
To curb drug deaths, communities turn to Reddit, texts and wastewater
With drug overdose deaths on the rise, authorities are attempting to curb the epidemic by tracking and sharing information in real time. In one unique effort, a nonprofit in New York City is using drug-testing equipment and stamping or marking habits of dealers to identify drug batches that may endanger users. Other approaches are also being used, such as monitoring drug-related chatter on Reddit and analyzing local wastewater for opioid and other drug levels. With the combination of these efforts, researchers hope to put a dent in the opioid crisis and reduce overdose deaths. Read full article here
Merv
June 1, 2023
