6,246 articles mezi dny 1.7.2020 a 31.7.2020

10 things we do that puzzle and scare horses

Horses, like our dogs and cats, are familiar to many of us, be they racehorses, police horses, or much-loved pony club mounts. So it might surprise you that horses, in Australia, are more deadly than snakes, and indeed all venomous animals combined.

Researchers find crystals of indium selenide have exceptional flexibility

A team of researchers affiliated with multiple institutions in China and one in the U.S. has found that semiconducting crystals of indium selenide (InSe) have exceptional flexibility. In their paper published in the journal Science, the group describes testing samples of InSe and what they learned about the material. Xiaodong Han with Beijing University of Technology has published a Perspective...

John Tyndall: the forgotten co-discoverer of climate science

It is surprising that the Irish scientist John Tyndall, born 200 years ago on August 2 1820, is not better known. This is despite the existence of the Tyndall Centre for Climate Change Research, the Tyndall National Institute and the Pic Tyndall summit on the Matterhorn in the Alps. There are even several Mount Tyndalls, Tyndall glaciers and Tyndall craters on the Moon and Mars.

Sea level rise: three visions of a future summer holiday at the coast

The COVID-19 pandemic will ensure summer 2020 is a washout for most. With international travel restrictions limiting holidays abroad, many people in the UK have opted to stay somewhere closer to home. As a result, there have been remarkable increases in the number of visitors to beaches across the UK. Thousands flocked to a beach in Bournemouth on a single day in June, causing the local council to...

New analysis method predicts disruptive solar flares

Solar flares—violent explosions on the surface of the sun—can send blasts of radiation hurtling toward Earth. While the planet's magnetic field protects humans on the surface, powerful solar flares can disable satellites, power grids and radio communications. But scientists aren't sure exactly what triggers solar flares, which makes it difficult to predict when one will occur. One theory...

Fine-particle air pollution has decreased across the US, but poor and minority communities are still the most polluted

Air pollution contributes to as many as 9 million premature deaths worldwide each year—twice as many as war, other violence, HIV/AIDS, tuberculosis and malaria combined. Fine particulate matter air pollution is especially dangerous: Microscopic particles readily enter the lungs, bloodstream and brain, with health effects that include infant death, reduced life expectancy for adults, cancer, lung...

Study of air quality in the U.S. shows income disparities still exist

A small team with members from the University of Virginia, Stanford University, and the U.S. Census Bureau has found that despite laws enacted to reduce unequal distribution of emissions of airborne particulate matter smaller than 2.5 µm in diameter (PM2.5) in the U.S., disparities remain. In their paper published in the journal Science, the group analyzed data over the past several decades to...

Analyzing pros and cons of two composite manufacturing methods

Airplane wings, wind turbine blades, and other large parts are typically created using bulk polymerization in composite manufacturing facilities. They are heated and cured in enormous autoclaves and heated molds as big as the finished part. Frontal polymerization is a new out-of-autoclave method for composite manufacturing that doesn't require a large facility investment. Researchers at the...

Politicians and face masks: the winners and losers – in pictures

Even Donald Trump and Jair Bolsonaro have accepted that wearing a face covering in return for saving thousands of lives works. But who nailed the look – and who was left with egg on their face?Coronavirus – latest updatesSee all our coronavirus coverageMost politicians – indeed, most adults – have come round to the idea that putting up with having a bit of fabric on your face in exchange...

Climate change and COVID-19: The denial playbook is the same

The phrase "every disaster movie begins with a scientist being ignored" resonates more than ever as two disasters unfold: the COVID-19 pandemic and climate change. One is occurring with horrifying rapidity and one more slowly; both would be far less damaging if scientific advice were heeded earlier.