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Bacho Kiro Cave Reveals Volumes About Human-Neanderthal Relationship

Published in , the new paper shows that the 45,000-year-old Bacho Kiro Cave people contributed genes to present-day people. “Surprisingly,” wrote the scientists, the bulk of these genes are to be found in modern day East Asia, and the Americas, while it was expected that these genes would be found in populations closer to where they lived, at the Bacho Kiro Cave in Europe. Another skeleton was discovered in Bacho Kiro Cave dating to 35,000-year-ago, that was not related to the earlier people, and the researchers went so far as to say this person was “genetically distinct” from the cave’s earlier inhabitants. The scientists concluded that this genetic difference demonstrated the earliest history of modern humans in Europe “may have been tumultuous and involved population replacements.” One can only imagine that over 10,0000 years the population at any one cave would see hundreds of total overhauls.

Gorillas don't lie: Chest beats provide reliable information about a male's size

Gorillas don t lie: Chest beats provide reliable information about a male s size By (0) A male gorilla beats his chest, which researchers say conveys accurate body size information to competitors and potential mates but may have meanings beyond just size. Photo by Jordi Galbany/Dian Fossey Gorilla Fund A male gorilla beats his chest. Photo by Jordi Galbany / Dian Fossey Gorilla FundA male gorilla chest beating. Photo by Jordi Galbany / Dian Fossey Gorilla Fund April 8 (UPI) To calculate the size of a live gorilla, scientists must rely on an advanced imaging technique called photogrammetry. But when gorillas size each other up, they just listen.

Mountain gorillas send messages to rivals with chest beating ritual

They recorded the duration, number and frequency of 36 chest beats made by six of the males and linked them to measurements taken from photos of their shoulder width. The researchers from Germany, Spain and the US believe that the bigger males have larger air sacs near their larynx, making the drumming beat sound lower in pitch to the human ear. Gorillas are highly competitive in the search for a mate, with a single male living among a group of females. Different gorillas drummed more rapidly and for longer, which could allow them to be identified by sound through the dense tropical forest, according to the paper

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