“We have a system that punished the whistle blowers like Edward Snowden, Chelsea Manning and Julian Assange, not the perpetrators of torture”—Professor Nils Melzer.
Rapporteur warns against trivialising psychological torture as states exploit internet to target individuals.
The Neolithic revolution, and the corresponding transition to agricultural and pastoralist lifestyles, represents one of the greatest cultural shifts in human history, and it has long been hypothesized that this might have also provided the opportunity for the emergence of human-adapted diseases. A new study published in Nature Ecology & Evolution led by Felix M. Key, Alexander Herbig, and Johannes Krause of the Max Planck Institute for the Science of Human History studied human remains excavated across Western Eurasia and reconstructed eight ancient Salmonella enterica genomes—all part of a related group within the much larger diversity of modern S. enterica. These results illuminate what was likely a serious health concern in the past and reveal how this bacterial pathogen evolved over a period of 6,500 years.
Searching for ancient pathogens
Most pathogens do not cause any lasting impact on the skeleton, which can make identifying affected archaeological remains difficult for scientists. In order to identify past diseases and reconstruct their histories, researchers have turned to genetic techniques. Using a newly developed bacterial screening pipeline called HOPS, Key and colleagues were able to overcome many of the challenges of finding ancient pathogens in metagenomics data.
WASHINGTON: Scientists have found that people who have a variant of a longevity gene have improved brain skills such as thinking, learning and memory. Researchers found that increasing levels of the gene, called KLOTHO, in mice made them smarter, possibly by increasing the strength of connections between nerve cells in the brain.
“This could be a major step toward helping millions around the world who are suffering from Alzheimer’s disease and other dementias,” said Dena Dubal, an assistant professor of neurology, the David A Coulter Endowed Chair in Aging and Neurodegeneration at the University of California San Francisco (UCSF) and the lead author of the study published in Cell Reports. “If we could boost the brain’s ability to function, we may be able to counter dementias,” Dubal said.
People who have one copy of a variant, or form, of the KLOTHO gene, called KL-VS, tend to live longer and have lower chances of suffering a stroke whereas people who have two copies may live shorter lives and have a higher risk of stroke. In the study, researchers found that people who had one copy of the KL-VS variant performed better on a battery of cognitive tests than subjects who did not have it, regardless of age, sex or the presence of the apolipoprotein 4 gene, the main genetic risk factor for Alzheimer’s disease.
Austrian researchers construct what they describe as the largest fully controllable entangled quantum system to date.
Authorities have closed down 12 Italian towns as they try to stop the virus from spreading. Photos show what it looks like on the ground.
Handicaps: weak private sector, Soviet-style bureaucracy. Helps: Great STEM education — and history.
More than Western governments and even more than China’s, the Russian government is trying to position itself as a facilitator of innovation in artificial intelligence, the technology that Vladimir Putin said will lead whoever masters it to global advantage. Russia seeks “to go our own way,” said Prime Minister Dmitry Medvedev, borrowing Lenin’s 1917 words about various anti-capitalist ideologies to describe his government’s 21st-century attempt to shake the world.
Those who doubt that this uniquely state-heavy approach can succeed would do well to remember that today’s internet and mobile telecommunications grew out of Pentagon-funded research, that the Soviet Union led the Space Race for a decade, and that U.S. astronauts currently ascend to orbit atop Russian rockets.
