"Ancestry-constrained phylogenetic analysis supports the Indo-European steppe hypothesis", by Will Chang, Chundra Cathcart, David Hall and Andrew Garrett (all of UC-Berkeley), provides new support for the "steppe hypothesis" or "Kurgan hypothesis", which proposes that Indo-European languages first spread with cultural developments in animal husbandry around 4500 - 3500 BCE.
Culture
Scientists should reduce antibiotic use in lab experiments - according to a researcher at the University of East Anglia.
Microbiology, molecular biology and genetic research such as the Human Genome Project use antibiotics in experiments.
But it all adds to the global problem of antibiotic resistance according to Dr Laura Bowater, from UEA's Norwich Medical School.
A new article published today in the Journal of Antimicrobial Chemotherapy highlights the problem.
A plant scientist from The Australian National University (ANU) has called for the United Nations to guarantee free and open access to plant DNA sequences to enable scientists to continue work to sustainably intensify world food production.
Dr Norman Warthmann, a plant geneticist at the ANU Research School of Biology, has lodged a submission with the UN, which is currently considering issues to include in its 2015 Global Sustainable Development Report.
Trauma is responsible for more global deaths annually than HIV, malaria and tuberculosis combined. Yet healthcare systems in many countries are missing out on life-saving treatments learnt on the battlefield, according to a review by King's College London and published today in the Journal of the Royal Society of Medicine.
Chalk up male preferences for women with a curvy backside to prehistoric influences.
A study, published online in Evolution and Human Behavior, investigated men's mate preference for women with a "theoretically optimal angle of lumbar curvature," a 45.5 degree curve from back to buttocks allowing ancestral women to better support, provide for, and carry out multiple pregnancies.
The history of Britain’s population is a familiar story to many. It tells of an ancient people (retrospectively dubbed the Celts) and subsequent invasion and settlement by the Romans, Anglo-Saxons, Normans and Vikings. And many people today still identify strongly with one or another of these groups.
However, historical records have their weaknesses. For example, it’s very difficult to know to what extent an invasion amounted to mass settlement replacing an existing population, and how much it was a small elite converting that existing population to a new way of life.
In Latin America, consensual (common-law) unions are traditionally associated with poorer or indigenous populations. But recent research is turning this conventional wisdom on its head, finding that that in the past 30 years or so consensual unions have become increasingly popular throughout Latin America, including in higher-income groups. In certain countries, such as Panama, common-law partnerships are now as widespread as in Quebec.
Research has shown that the health of immigrants is generally better than that of citizens of their host country, at least on their arrival and for some time afterwards. But a team of researchers in Montreal has found that this is not true of all groups of immigrants; children and older people, for example, may be exceptions.
Across much of the Western world, 25 years of expansion of the medical system has actually led to people feeling less healthy over time, a new study has found.
A researcher at The Ohio State University used several large multinational datasets to examine changes in how people rated their health between 1981 and 2007 and compared that to medical expansion in 28 countries that are members of the Organization for Economic Co-operation and Development.
Clear and realistic expectations are key to successfully hiring heads of departments, say Professor Pierre-Alain Clavien, University of Zurich, and Joseph Deiss, former President of the Swiss Confederation, in a commentary in Nature magazine.
Are humans born with the ability to solve problems or is it something we learn along the way? A research group at the Department of Physics and Astronomy, Aarhus University, is working to find answers to this question.
The research group has developed a computer game called Quantum Moves, which has been played 400,000 times by ordinary people. This has provided unique and deep insight into the human brain's ability to solve problems. The game involves moving atoms around on the screen and scoring points by finding the best way to do so.
A Los Angeles ordinance designed to curb obesity in low-income areas by restricting the opening of new fast-food restaurants has failed to reduce fast-food consumption or reduce obesity rates in the targeted neighborhoods, according to a new RAND Corporation study.
Since the fast-food restrictions were passed in 2008, overweight and obesity rates in South Los Angeles and other neighborhoods targeted by the law have increased faster than in other parts of the city or other parts of the county, according to findings published online by the journal Social Science & Medicine.
The number of people living with cystic fibrosis into adulthood is expected to increase dramatically by 2025, prompting calls for the development of adult cystic fibrosis services to meet the demand.
People living with cystic fibrosis have previously had low life expectancy, but improvements in treatments and care in the last three decades have led to an increase in survival with almost all children now living to around 40 years.
A generic version of insulin, the lifesaving diabetes drug used by 6 million people in the United States, has never been available in this country because drug companies have made incremental improvements that kept insulin under patent from 1923 to 2014. As a result, say two Johns Hopkins internist-researchers, many who need insulin to control diabetes can't afford it, and some end up hospitalized with life-threatening complications, such as kidney failure and diabetic coma.
en and women who adapt their daily diet to meet current UK dietary guidelines could reduce their risk of a heart attack or a stroke by up to a third, according to a new study by King's College London.