The scientific study, rewrites the world's only flying mammals' family tree, contradicts long-held assumptions of where the species arose.
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Researchers say that the more primitive part of the brain regulates functions like breathing and keeping our heart beating.
Scientists say birds organize their singing using the same mathematical formula found in human speech.
Until now, there had been no direct genetic evidence linking colonial-era outbreaks in the Americas to strains circulating in the Old World.
Scientists say social species use a range of "preemptive behaviors" in anticipation of conflict.
Scientists pieced together the genetic history of Acinetobacter baumannii — a notoriously stubborn hospital pathogen — using samples dating back 50 years to the 1970s.
Until now, it had been unclear how our laughter may have changed over millions of years of evolution, and how it might relate to apes' laughter.
The early four-legged animals, the tetrapods, were the forebears of today’s mammals, birds, reptiles, and amphibians.
Researchers analyzed permafrost samples collected from ground squirrel burrows, spanning several glacial periods.
The findings come from a forensic analysis of dental plaque from early humans, dating back up to 33,000 years.