Most males rule the animal kingdom, but when it comes to lemurs -- primates that look like cats -- the trend is upturned. Lemur females behave more like males, thanks to the presence of slight testosterone, says a new study.
Just like humans, some chimpanzees are smarter than others, and about half of that variation in intelligence depends on the genes that individuals carry and pass on from one generation to the next, says a study.
Andalusian researchers led by the University of Granada, have discovered that members of the human lineage, classed as the genus Homo are the only primates throughout their 2.5-million year history, whose size of teeth has decreased as their brain size increased.
Researchers have found that exposure to Bisphenol A (BPA) - a chemical used in a wide variety of consumer products, such as resins used to line metal food and beverage containers, thermal paper store receipts, and dental composites - can cause fetal abnormalities in primates.