Chimpanzee Dialect Grows More Distinct With Age
Chimpanzee grunts, laughs and whimpers grow more population specific with age, a new study finds, hinting that experience, not genes alone, shapes primate vocal dialects.
PLOS One
PLOS One is a peer-reviewed open access mega journal published by the Public Library of Science since 2006. The journal covers primary research from any discipline within science and medicine.
Smartwatches Overestimate Calories, Worse at Higher Body Fat
Wrist worn fitness trackers can overshoot workout calorie counts by wide margins, and the four most popular models get less accurate the more body fat a wearer has, a new lab study using clinical grade metabolic testing finds.
Who You Are Predicts Being Childfree More Than Where You Live
Across 20,118 adults in all 50 states, childfree prevalence ran from 22% in California to 9.4% in Louisiana, yet no region emerged: the map is scattered, and state policy levers look unlikely to shift it.
Unstructured Free Time Linked to Teen Offending Across 21 Countries
A study of 58,425 adolescents across 21 countries found that unstructured free time, especially unsupervised hours outside the home, was strongly associated with self-reported offending even after accounting for self-control, parenting and morality. Only having delinquent friends showed a stronger overall association.
Barbie Doll’s Body Has Gotten More Real. Ken’s Waist Has Not.
Thirty years after a landmark study found Barbie and Ken’s proportions were almost impossible in real people, Australian researchers measured today’s dolls with the same tape and the same math. Barbie has moved a long way toward average. Ken’s waist has barely budged.
Extraordinary Experiences Usually Strike When You’re Alone
A survey of over five thousand Brazilian adults finds that deja vu, visions and out-of-body sensations follow oddly similar patterns of interpretation, and most people count the experience as a net positive within their own lives.
Its Nearest Relative Lives 1,200 Km Away: How a New Black Monkey Ended Up Marooned in the Congo
Likweli is only the fifth new African monkey named in 75 years, and it split from its closest cousin 4–5 million years ago — the deepest divergence in the colobus family. Wide rivers and poor-soil forest appear to have fenced it into a range the size of a small city, where it’s already endangered.