323 articles from WEDNESDAY 29.7.2020

Nasa moon mission asks US universities to develop technology

Fund will offer up to $2m to rapidly find ways of locating water or building power systemsNasa has asked American universities to propose new technologies that will help the space agency conduct sustainable exploration of the moon. Successful applicants will receive up to $2m (£1.5m) from the newly inaugurated lunar surface technology research (Lustr) opportunity to rapidly develop technology in...

First results of an upgraded device highlight lithium's value for producing fusion

Lithium, the silvery metal that powers smart phones and helps treat bipolar disorders, could also play a significant role in the worldwide effort to harvest on Earth the safe, clean and virtually limitless fusion energy that powers the sun and stars. First results of the extensively upgraded Lithium Tokamak Experiment-Beta (LTX-β) at the U.S. Department of Energy's (DOE) Princeton Plasma Physics...

Study sheds light on the evolution of the earliest dinosaurs

The classic dinosaur family tree has two subdivisions of early dinosaurs at its base: the Ornithischians, or bird-hipped dinosaurs, which include the later Triceratops and Stegosaurus; and the Saurischians, or lizard-hipped dinosaurs, such as Brontosaurus and Tyrannosaurus.

A neural network that spots similarities between programs could help computers code themselves

Computer programming has never been easy. The first coders wrote programs out by hand, scrawling symbols onto graph paper before converting them into large stacks of punched cards that could be processed by the computer. One mark out of place and the whole thing might have to be redone. Nowadays coders use an array of powerful tools that automate much of the job, from catching errors as you...

The Guardian view on Covid-19's resurgence: we can make ourselves safer | Editorial

The picture in Europe and further afield is grim. But we must not resign ourselves to a large-scale recurrence of coronavirus Is the brief respite over? In England, and other European nations hit hard by coronavirus, bars and cafes have reopened, and people have begun to fly abroad again for holidays. Guests have gathered for weddings. Babies have met their grandparents for the first time.Though...

UK health leaders call for government to seek total elimination

Scientists predict 43 to 84 people will still be dying from Covid-19 every day by mid-AugustCoronavirus – latest updatesSee all our coronavirus coverageScientists advising the government have predicted that between 43 and 84 people will still be dying from Covid-19 every day by mid-August, as health leaders called on the government to adopt a “zero Covid” approach and seek total elimination...

Archaeologists discover likely source of Stonehenge's giant sarsen stones

Stones in Wiltshire woodland found to be exact match for majority of site’s sarsensToday West Woods in Wiltshire is a popular spot for hikers, dog walkers and mountain bikers, famed for its bluebells in the springtime. Stick to the footpaths and it is easy to miss the hefty flat stones hidden in the undergrowth.But groundbreaking scientific research published on Wednesday reveals that, 4,500...

Scientists discover the mechanism of competition between mitochondrial genomes coexisting

Research at the Centro Nacional de Investigadores Cardiovasculares (CNIC) has identified the mechanism of competition between distinct mitochondrial genomes coexisting in the same cell. The study, published today in Science Advances, examines why the simultaneous presence of more than one variant of mitochondrial DNA (mtDNA) in a cell is rejected in most cells, which select a single mtDNA variant...

Accelerated bone deterioration in last 70 years at famous Mesolithic peat bog in peril

Alarming results from a 2019 survey of well-known archaeological site Ageröd reveal drastic bone and organic matter deterioration since the site's initial excavations in the 1940s, suggesting action is needed to preserve findings from Ageröd and similar sites, according to a study published July 29, 2020 in the open-access journal PLOS ONE by Adam Boethius from Lund University, Sweden, and...

Imaging technology reveals historical layers of Eyckian Lamb of God

Two non-invasive chemical imaging modalities were employed to help understand the changes made over time to the Lamb of God, the focal point of the Ghent Altarpiece (1432) by Hubert and Jan Van Eyck. Two major results were obtained: a prediction of the facial features of the Lamb of God that had been hidden beneath non-original overpaint dating from the 16th century (and later), and evidence for a...