A gene called GATA6 (GATA binding protein 6) regulates aging of human mesenchymal stem/stromal cells (MSCs), according to new research from the University of Wisconsin-Madison. Cellular reprogramming can reverse the aging that leads to a decline in the activities and functions of MSC cells. This is something that researchers have known for a while. But [...]
Researchers have recently measured the propagation speed of ultrasonic waves in an aluminum-rich hydrous mineral called Al-phase D at pressure conditions relevant to the Earth's deep mantle. Their results suggest that seismic shear anomalies observed locally beneath subduction zones may reveal the presence of hydrous minerals in the uppermost lower mantle, which would have important implications for the Earth's interior because hydrogen affects considerably the physical and chemical properties of mantle minerals.
A new global study finds older people in wealthy countries consume more alcohol than their counterparts in middle-income countries, on average, although a higher cost of alcohol is associated with less frequent drinking. Across counties, people drink less as they get older, but at different rates and starting points.
Dolutegravir, the current first-line treatment for HIV, may not be as effective as hoped in sub-Saharan Africa, suggests new research published on World AIDS Day. The study finds that this so-called 'wonder drug' may be less effective in patients resistant to older drugs.
Results of standard laboratory tests performed on adult outpatients to provide an overall picture of their health are fairly consistent between those with obesity and their leaner counterparts, investigators report.
One of world's earliest examples of art, the enigmatic `Venus' figurines carved some 30,000 years ago, have intrigued and puzzled scientists for nearly two centuries. Now a researcher believes he's gathered enough evidence to solve the mystery behind these curious totems.
As temperatures rise due to climate change, the melting of polar ice sheets is accelerating. An international team of scientists has now examined the dynamics of the East Antarctic Ice Sheet more closely using deep-sea sediments dating back approximately 2.5 million years. Their results indicate that, in a constantly warming climate, the ice masses of East Antarctica could be much less stable than previously thought.
By analyzing sediment cores taken from six sites in southern Greece, an international team of researchers identified trends in cereal, olive, and vine pollen indicating structural changes in agricultural production between 1000 BCE and 600 CE. The researchers combine varying fields of scientific research to provide evidence for a market economy in ancient Greece characterized by integrated agricultural production and a major expansion of trade.
Scientists have conducted a 'molecular dissection' of a part of the virus that causes foot-and-mouth disease, to try and understand why the pathogen is so infectious. A team of scientists has investigated the significance of the unusual way the virus's genome - or genetic blueprint - codes for the manufacture of a protein called 3B. The protein is involved in the replication of the virus.
The number of wildfires and the amount of land they consume in the western US has substantially increased since the 1980s, a trend often attributed to ongoing climate change. Now, new research finds fires are not only becoming more common in the western US but the area burned at high severity is also increasing, a trend that may lead to long-term forest loss.
New research reveals that emissions are not growing as fast as the UN's Intergovernmental Panel on Climate Change's assessments have indicated -- and that the IPCC is not using the most up-to-date climate scenarios in its planning and policy recommendations.
RoboGrammar is a new system that automates and optimizes robot design. The system creates arthropod-inspired robots for traversing a variety of terrains. It could spawn ventive robot forms with enhanced functionality.
What if there is a major earthquake near Cologne? This scenario is subject of the 'Risk Analysis in Civil Protection 2019' report that was recently submitted to the German Bundestag. On the basis of extensive research, experts have listed in detail effects to be expected. What Germans usually only know from abroad results from modeling a strong earthquake near the megacity of Cologne: ground shaking, damaged and destroyed houses, blocked roads, many injured and dead.