In a new study, researchers used more than 5 million measurements from individual trees across much of eastern North America and showed the rate at which introduced species are spreading has increased over the last two decades. Additionally, native tree diversity is on the decline in areas where exotic species originally introduced by humans have encroached.

If there was a contest for biggest female bullies of the animal world, lemurs would be near the top of the list. It’s the ladies who get their way and keep males in line. In one branch of the lemur family tree, however, some species have evolved to have a more harmonious relationship between the sexes. New findings suggest that this amiable shift was driven by changes in the “love hormone” oxytocin inside their brains.

Researchers have developed a noninvasive method to detect anemia using grayscale photos of the eye’s conjunctiva, taken with standard smartphones. By applying machine learning to spatial and textural features extracted from over 12,000 photos of 565 children aged 5 to 15, the study found strong associations between these features and anemia status. Unlike other approaches, this method does not rely on color analysis or specialized equipment, making it practical for use in low-resource settings. The findings suggest a scalable, affordable tool for anemia screening in children, especially in areas with limited access to laboratory testing.