276 articles from MONDAY 22.6.2020
Hamsters develop protective immunity to COVID-19 and are protected by convalescent sera
- ScienceDaily
- 20/6/22 23:20
In an animal model for COVID-19 that shares important features of human disease, scientists show that prior infection with the SARS-CoV-2 virus provides protection against reinfection, and treatment with convalescent serum limits virus replication in their lungs.
Milk River slows to trickle and could dry up entirely due to U.S. canal collapse
The Milk River has slowed to a trickle and could dry up completely this summer due to a canal collapse in the U.S., raising fears of millions of dollars in crop damage and other problems for dozens of farms and communities in southern...
Massive prehistoric circle near Stonehenge
- ScienceDaily
- 20/6/22 22:46
Archaeologists have discovered a major new prehistoric monument only a short distance away from Stonehenge. Fieldwork and analysis have revealed evidence for 20 or more massive, prehistoric shafts, measuring more than 10 metres in diameter and 5 metres deep. These shafts form a circle more than 2 kilometres in diameter and enclose an area greater than 3 square kilometres around the Durrington...
Team unveils catalyst that can break problematic C-F bonds
Rice University engineers have created a light-powered catalyst that can break the strong chemical bonds in fluorocarbons, a group of synthetic materials that includes persistent environmental pollutants.
'Off-the-charts warm': Siberian town hits 100 degrees
The milestone comes as Siberia — and the Asian continent as a whole — have experienced unusually warm conditions since the start of...
Scientists home in on pairs of atoms that boost a catalyst's activity
Replacing the expensive metals that break down exhaust gases in catalytic converters with cheaper, more effective materials is a top priority for scientists, for both economic and environmental reasons. Catalysts are required to perform chemical reactions that would otherwise not happen, such as converting polluting gases from automotive exhaust into clean compounds that can be released into the...
Fluorocarbon bonds are no match for light-powered nanocatalyst
- ScienceDaily
- 20/6/22 22:38
Engineers have created a light-powered catalyst that can break the strong chemical bonds in fluorocarbons, a group of synthetic materials that includes persistent environmental pollutants.
Study finds new mentoring model supports underrepresented minority women faculty in STEM
Over the last 20 years, many academic institutions have conducted surveys in STEM disciplines, seeking ways to address and increase awareness of discrimination and racism that are major obstacles to attracting and retaining women—particularly underrepresented minority women—to diversify the STEM workforce.
Research in land plants shows nanoplastics accumulating in tissues
As concern grows among environmentalists and consumers about micro- and nanoplastics in the oceans and in seafood, they are increasingly studied in marine environments, say Baoshan Xing at the University of Massachusetts Amherst and colleagues in China. But "little is known about the behavior of nanoplastics in terrestrial environments, especially agricultural soils," they add.
Apple switches to own chips for Macs; adds features, privacy controls
Apple Inc on Monday said it will switch to its own chips for its Mac computers, saying the first machines will ship this year and ending a nearly 15-year reliance on Intel Corp to supply processors for its flagship laptops and...
Siberian town hits record 38C over weekend amid heat wave
A Siberian town with the world's widest temperature range has recorded a new high amid a heat wave that is contributing to severe forest...
New class of precision medicine strips cancer of its DNA defenses
- ScienceDaily
- 20/6/22 22:03
A new precision medicine targeting cancer's ability to repair its DNA has shown promising results in the first clinical trial of the drug class. The new study, designed to test the drug's safety, found that half of patients given the new drug either alone or with platinum chemotherapy saw their cancer stop growing, and two patients saw their tumours shrink or disappear completely.
Immune cells infiltrating tumors may play bigger cancer role than previously thought
- ScienceDaily
- 20/6/22 22:02
Researchers uncovered in mice how a molecule involved in cells' response to stress determines whether macrophages promote inflammation in the tumor microenvironment. Inflammation is known to promote tumor growth, making this molecule an attractive target for drug development.
New design for 'optical ruler' could revolutionize clocks, telescopes, telecommunications
Just as a meter stick with hundreds of tick marks can be used to measure distances with great precision, a device known as a laser frequency comb, with its hundreds of evenly spaced, sharply defined frequencies, can be used to measure the colors of light waves with great precision.
US beekeepers reported lower winter losses but abnormally high summer losses
Beekeepers across the United States lost 43.7% of their managed honey bee colonies from April 2019 to April 2020, according to preliminary results of the 14th annual nationwide survey conducted by the nonprofit Bee Informed Partnership (BIP). These losses mark the second highest loss rate the survey has recorded since it began in 2006 (4.7 percentage points higher than the average annual loss rate...