The development of new hunting projectiles by European hunter-gatherers during the Mesolithic may have been linked to territoriality in a rapidly-changing climate, according to a study published July 17, 2019 in the open-access journal PLOS ONE by Philippe Crombé from Ghent University, Belgium.
For generations, household farmers in the Horn of Africa have selectively chosen chickens with certain traits that make them more appealing. Some choices are driven by the farmers' traditional courtship rituals; others are guided by more mundane concerns, such as taste and disease resistance. The result is the development of a genetically distinct African chicken -- one with longer, meatier legs, according to new research. But that 3,000-year-old local breed type is threatened by the introduction of commercial cluckers.
Strong volcanic eruptions, especially when a super volcano erupts, will have a strong impact on ozone, and might interrupt the ozone recovery processes.
A team of international researchers led by La Trobe University and the University of Melbourne have, for the first time worldwide, applied marine geology techniques at an ancient harbour archaeological site to uncover ancient harbour technologies of the first centuries AD.
New research brings to light for the first time the evolution of maternal roles and parenting responsibilities in one of our oldest evolutionary ancestors. Australopithecus africanus mothers breastfed their infants for the first 12 months after birth, and continued to supplement their diets with breastmilk during periods of food shortage. Tooth chemistry analyses enable scientists to 'read' more than two-million-year-old teeth. Finding demonstrates why early human ancestors had fewer offspring and extended parenting role.
Researchers from the National Museums of Kenya, University of Arkansas, University of Missouri and Duke University have announced the discovery of a tiny monkey that lived in Kenya 4.2 million years ago.
The most complete skull of a duck-billed dinosaur from Big Bend National Park, Texas, is revealed in the Journal of Systematic Palaeontology as a new genus and species, Aquilarhinus palimentus. This dinosaur has been named for its aquiline nose and wide lower jaw, shaped like two trowels laid side by side.
Infants of the extinct human species Australopithecus africanus likely breast fed for up to a year after birth, similar to modern humans but of shorter duration than modern day great apes, according to an analysis of fossil teeth funded in part by the National Institutes of Health. The findings provide insight into how breast feeding evolved among humans and may inform strategies to improve modern breast-feeding practices.
Mount Sinai researchers working as part of an international team have discovered previously unknown breastfeeding patterns of an extinct early human species by studying their 2-million-year-old teeth, providing insights into the evolution of human breastfeeding practices, according to a study published in Nature in July.
A team of paleontologists led by Professor Jingmai O'Connor from the Institute of Vertebrate Paleontology and Paleoanthropology (IVPP) of the Chinese Academy of Sciences, together with researchers from the Shandong Tianyu Museum of Nature, have discovered a new specimen of the volant dromaeosaurid Microraptor zhaoianus with the remains of a nearly complete lizard preserved in its stomach.