Articles by Paul Arnold
Phys.org / Remote work is taking its toll on the mental health of American workers, researchers find
Working from home comes with some major pluses. It's more flexible, there's no more pesky commute, work-life balance improves, and you can even stay in your pajamas all day if you want. But according to a major study of more ...
Phys.org / Understanding Earth's hidden east-west symmetry could improve climate models
Earth is divided into two halves: the Northern and Southern Hemispheres. Both reflect equal amounts of sunlight (albedo) even though they have different landmasses and weather patterns, especially cloud distribution. Why ...
Phys.org / Greenland shark genome reveals clues to 400-year lifespan
The first comprehensive map of nearly the entire Greenland shark genome is beginning to reveal some of the genetic clues behind its incredibly long life. The work could one day help scientists develop new cures and treatments ...
Phys.org / Solar sails edge closer to reality, but interstellar travel is another story
From planetary rovers and asteroid sample return missions to the recent Artemis II flight above the far side of the moon, we are seemingly good at doing space. But our achievements still do not match many of our space dreams, ...
Phys.org / Kamo'oalewa asteroid's lunar origin challenged ahead of Tianwen-2 arrival
China's Tianwen-2 sample-return mission is well on its way to its target, an asteroid called Kamo'oalewa. The spacecraft left Earth in May 2025 and should return in late 2027 with samples of a space rock that scientists had ...
Phys.org / How a Richard Feynman formula could explain your dining habits in a new city
One of the dilemmas facing anyone in a new and unfamiliar city is where to dine out. You might consult guides, speak to locals, check reviews, and ultimately, try your luck. But if you're there for a while, at some point ...
Phys.org / Britain's oldest cave art may have been rediscovered in Bacon Hole cave
The oldest cave art in Britain may have been discovered, or more likely rediscovered, in a cave on the Gower Peninsula in South Wales, possibly dating back around 17,000 years.
Phys.org / One of our planets may be missing, and it could explain why the solar system looks the way it does
Our solar system has two ice giants, Uranus and Neptune, but there may have been a third. According to a new study published in the journal Icarus, this extra world might have triggered a violent planetary shuffling billions ...
Phys.org / Supermassive black holes could be the universe's biggest planet nurseries
Supermassive black holes are the largest known black holes in the universe, sitting at the center of most large galaxies. They are sometimes described as cosmic monsters because they feed on surrounding gas and dust when ...
Medical Xpress / Light movement in pregnancy linked to lower risk of complications
Moving more and sitting less could lower the risk of adverse pregnancy outcomes, according to a new study published in the Journal of the American Medical Association.
Phys.org / Hailstorms could grow more dangerous and damaging with climate change
Hailstorms can be incredibly dangerous, posing risks to life and property. Then there's the economic damage to cars, crops, and infrastructure caused by large balls of ice falling at high speed from the sky. And the problems ...
Phys.org / How bean plants call on wasps for help when hungry caterpillars attack
Some plants are not the sitting ducks they appear to be when they come under attack. If a hungry caterpillar starts to chomp on the succulent leaves of a common bean plant, a highly sophisticated defense system kicks into ...
Phys.org / Outdoor lights may keep mosquitoes biting and breeding deeper into autumn
In some parts of the world, autumn brings welcome relief from mosquitoes, such as the Northern house mosquito (Culex pipiens). As the days grow shorter, the waning light is a signal for them to enter a winter state of dormancy ...
Phys.org / Fake predator eyes scare off seabirds until they learn they're not real
In Danish fisheries, fish-eating seabirds are a menace. They often swoop down and feed on fish trapped in nets, which can hit profits and also sometimes lead to the accidental death of the birds. So scientists deployed an ...
Phys.org / Spider silk-inspired process turns corn protein into tougher plastic-like material
When it comes to technology and innovation, we have a lot to thank Mother Nature for. Learning from the natural world has led to a range of useful products, including Velcro, self-cleaning paint, and ultra-strong body armor. ...