Articles by Paul Arnold
Phys.org / Neanderthals took reusable toolkits with them on high-altitude treks through the Alps
When Neanderthals in Italy were crossing the Alps, it's likely they took refuge in high-altitude bear caves. A new study of stone tools in Caverna Generosa, a cave sitting 1,450 meters up in the mountains, found that these ...
Phys.org / Howler monkey roars exaggerate body size but are truthful to other howlers
Howler monkeys are relatively small primates known for their incredibly loud, low-frequency roars that sound as if they come from a much larger creature. This is useful in the animal kingdom because sounding big can deter ...
Phys.org / What deep sea mud is revealing about giant earthquakes along the Pacific Coast
Marine turbidites are layers of mud and sand deposited on the deep ocean floor by massive underwater landslides and are often used as a historical record for reconstructing earthquake histories.
Phys.org / A shark's energy reserves are linked to how far it travels, suggests new study
For years, researchers have tagged sharks in the world's oceans to learn where they go, how they migrate and where they feed. While these tags have given us a wealth of data about their lives, many questions still remain. ...
Phys.org / Wildfires trigger massive soil loss for decades, new global map shows
Wildfires are devastating events that destroy forests, burn homes and force people to leave their communities. They also have a profound impact on local ecosystems. But there is another problem that has been largely overlooked ...
Medical Xpress / Color blindness may reduce early bladder cancer detection and survival
People who are colorblind may be missing a life-saving warning sign of bladder cancer. Analysis of the electronic health records of hundreds of people found that those with color vision deficiency (CVD), or color blindness ...
Phys.org / Horses can smell human fear when we sweat
Horses can smell your fear. If you are experiencing this emotion while standing near a horse, they will be able to detect it through your scent alone, which changes their behavior and physiology. That's the conclusion of ...
Phys.org / New map reveals a rugged world beneath the Antarctic ice sheet
Scientists have discovered there is more to Antarctica than meets the eye. A new map of the landscape beneath the frozen continent's ice sheet has revealed a previously hidden world of mountains, deep canyons and rugged hills ...
Medical Xpress / What a study of 67,000 people reveals about sexual desire and age
Sexual desire is a fundamental part of being human and a driving force in many relationships, yet we still don't fully understand why it varies so much from person to person.
Phys.org / Construction emissions are higher than thought—but the solution isn't building less, new study finds
Many cities are making great strides in the fight against climate change, such as improving building energy efficiency, reducing traffic congestion and switching to renewable power sources. But there is another often overlooked ...
Phys.org / How concrete jungles could be changing dandelion seed dispersal in Japan
Dandelions are incredible plants with a highly efficient seed-dispersal system, meaning even a gentle breeze can carry seeds and their parachutes great distances. But in several places in Aichi Prefecture, Japan, they have ...
Phys.org / How prolonged maternal care in horses builds better brains and improves social skills
As with humans, the maternal bond in nature is important for animals to find their way in the world. In mammals, a mother does not just provide milk; she also teaches her offspring survival skills and how to play well with ...
Tech Xplore / Underwater robots inspired by nature are making progress, but hurdles remain
Underwater robots face many challenges before they can truly master the deep, such as stability in choppy currents. A new paper published in the journal npj Robotics provides a comprehensive update of where the technology ...
Phys.org / Two simple modifications cool Kenyan homes and keep mosquitoes out
Researchers in Kenya have identified two low-cost solutions that tackle the twin challenges of rising temperatures and malaria transmission.
Phys.org / Sparse tongue hair explains why queen bees stop foraging when workers emerge
During spring, when queen bumblebees first emerge from hibernation to start their nests, they work incredibly hard foraging for nectar to fuel their new colonies. But then, as soon as their first workers are born, they seem ...
