Articles by Paul Arnold
Tech Xplore / Friction-based landing gear enables drones to safely land on fast-moving vehicles
Drones have become a more common sight in our skies and are used for everything from consumer hobbies like aerial photography to industrial applications such as farming, surveillance and logistics. However, they are not without ...
Phys.org / General relativity could make life possible on planets orbiting white dwarfs
In the hunt for extraterrestrial life, we usually look for planets orbiting sun-like stars and icy moons. But there is another possible candidate—planets circling white dwarfs, the hot, dense remnants of dead stars.
Phys.org / How biological motors achieve maximum efficiency
Inside nearly every cell of your body, the tiny F1 motor works non-stop to create adenosine triphosphate (ATP), the universal energy source that powers almost every action you take—from breathing to running. While scientists ...
Phys.org / Clam shells sound alarm over unstable North Atlantic currents
Bivalves, such as clams, oysters and mussels, record seasonal environmental changes in their shells, making them living chronicles of climate history. A new study of bivalve shells has detected two major episodes of instability ...
Tech Xplore / AI could make it easier to create bioweapons that bypass current security protocols
Artificial intelligence is transforming biology and medicine by accelerating the discovery of new drugs and proteins and making it easier to design and manipulate DNA, the building blocks of life. But as with most new technologies, ...
Phys.org / Trauma in a puppy's first six months linked to adult aggression, says new study
As many dog owners can attest, their four-legged companions are delightful and loving. But for others, their animals have an aggressive side, such as biting and attacking strangers, which may ultimately lead to them having ...
Phys.org / Ancient viral DNA is essential for human embryo development, study shows
Our ancient past isn't always buried history. When it comes to our DNA, nearly 9% of the human genome is made up of leftover genetic material from ancient viruses (called endogenous retroviruses or ERVs) that infected our ...
Phys.org / Early humans dined on giant sloths and other Ice Age giants, archaeologists find
What did early humans like to eat? The answer, according to a team of archaeologists in Argentina, is extinct megafauna, such as giant sloths and giant armadillos. In a study published in the journal Science Advances, researchers ...
Phys.org / Microplastics reduce soil fertility and boost production of a potent greenhouse gas, study shows
More than 90% of plastic waste ends up in the soil, where it breaks down into microplastics that are invisible to the naked eye. Microplastic pollution of the soil poses a severe threat to soil health as it can harm essential ...
Phys.org / First comprehensive review of plastic pollution in the Amazon reveals contamination poses urgent health risks
Plastic may well be a useful everyday item, but its careless disposal in oceans and inland waterways is a pressing global problem. Plastic pollution poses a significant threat to human health and the health of our planet. ...
Tech Xplore / Security researchers say G1 humanoid robots are secretly sending information to China and can easily be hacked
Researchers have uncovered serious security flaws with the Unitree G1 humanoid robot, a machine that is already being used in laboratories and some police departments. They discovered that G1 can be used for covert surveillance ...
Phys.org / Scientists finally prove that a quantum computer can unconditionally outperform classical computers
A quantum computer has demonstrated that it can solve a problem more efficiently than a conventional computer. This achievement comes from being able to unlock a vast memory resource that classical computing cannot match.
Phys.org / Clues from the deep sea that an exploding star sent debris to the Earth 10 million years ago
Scientists trying to work out whether a star exploded and the resulting debris crashed into Earth 10 million years ago may be one step closer to solving the mystery. They discovered an unusual amount of Beryllium-10 (10Be) ...
Tech Xplore / Novel film manufacturing technique lets robots walk on water
Imagine tiny robots zipping across the surface of a lake to check water quality or searching for people in flooded areas. This technology is moving closer to reality thanks to work by researchers at the University of Virginia's ...
Phys.org / Study of the world's longest-lived person reveals rare genes and good bacteria are among the keys to a long life
What is the secret of supercentenarians? While there is no magical "elixir of life" that allows us to live forever, this incredibly rare group of people who live to be 110 years or older appears to have some biological advantage. ...