ניווט נגישות
כתבות אחרונות מאתר 'Phys'
Phys

3-million-year-old Taung Child once again shakes up our human family tree‎

A century after the Taung Child permanently altered our view of human origins, a new study published in npj Palaeoecosystems dates the famous fossil to between 2.96 and 3.03 million years old. Led by professor Gabriele Macho of the Archaeology, Environmental Changes and Geo-Chemistry (AMGC) research group at Vrije Universiteit Brussel (VUB), the international research highlights that the human family tree in southern Africa was far more complex than previously assumed.

22:56
תפריט כתבה
Phys

Canines could help anthropological studies, answering questions about human evolution‎

Anthropologists seeking to understand human evolution often include primates such as chimps or apes in their studies. But a new review paper by Kyle Smith, a postdoctoral research scholar in NC State's College of Veterinary Medicine, argues that an equally informative animal is often right under our noses—the domestic (or family) dog.

22:56
תפריט כתבה
Phys

Not a 'night owl' yet: Extraordinary bird fossil from Messel Pit suggests species still hunted by day‎

An exceptionally well-preserved, approximately 47-million-year-old owl fossil from the UNESCO World Heritage Site Messel provides new clues as to when owls became nocturnal. The newly described species Masillastrix blattophaga was likely still diurnal—as indicated by an iridescent cockroach in its stomach, as well as the structure of its feathers and wing bones. In their new study, published in the journal Current Biology, the Senckenberg researchers speculate that nocturnal behavior in owls only developed between the middle and late Eocene, some 47 to 34 million years ago.

22:56
תפריט כתבה
Phys

Our sun's undiscovered stellar nemesis is still out there, says physicist‎

Long-period, high-inclination comets of the sort that can cause extinction-level impacts here on Earth have long been thought to originate from a theoretical Oort cloud. That is, a roughly spherical cloud of icy cometary objects that number in the trillions at distances that extend up to 1.6 light-years away.

22:56
תפריט כתבה
Phys

Tiny beetle trapped in 53-million-year-old amber is named after Twenty One Pilots‎

Preserved in amber for about 53 million years, a beetle has been described as a new species by researchers in Spain and France. Named Cnopus twentyonepilotorum, it is the first puppet beetle (family Aderidae) to be formally described from the Oise amber of northern France. The findings are published in the journal ZooKeys.

22:56
תפריט כתבה
Phys

Chimpanzees blowing raspberries offer first evidence of learned vocal conventions in great ape communication‎

Chimpanzees may learn how to use some of their calls from the adults around them, in a surprising parallel with how human children learn words, finds a study from the CNRS Institute of Cognitive Sciences, University of Warwick and Taï Chimpanzee Project.

22:56
תפריט כתבה
Phys

Extended mathematical language captures symmetry in layered materials‎

Symmetry is all around us, from the repeating patterns of crystals to the stitches in a knitted sweater. In materials science, these patterns are more than just visually appealing: They can influence how a material conducts heat, transports electricity and interacts with light. Now, an international research team led by Tohoku University's Advanced Institute for Materials Research (WPI-AIMR) has developed a mathematical framework for describing symmetry in complex, layered structures, opening new possibilities for understanding and designing functional materials. Their findings are published in the journal Interface Focus.

22:56
תפריט כתבה
Phys

Don't study alone: New research shows how loneliness impacts student health—and how universities can help‎

The negative impact of loneliness on health and well-being is well known, but for university students, social interaction can also be key to academic success. A new study by Constructor University professor Dr. Sonia Lippke and colleagues, published in the journal Frontiers in Psychology, analyzes the effects of student loneliness on health and academics and lays out concrete steps that universities can take to mitigate them.

22:56
תפריט כתבה
Phys

Atomic defects leave telltale optical fingerprints in quantum material‎

The tiny atomic defects so important for future quantum technologies can be difficult to spot. Fortunately, they leave behind some clues. The defects can alter how a material responds to light, producing a distinctive optical fingerprint that scientists can measure. The challenge is figuring out which fingerprints belong to which defects.

22:56
תפריט כתבה
Phys

Giving wheat breeders hyper vision‎

Aswin Singaram Natarajan rolls a stem of wheat in his hands. It looks perfectly healthy, but the senior experimental scientist at CSIRO, Australia's national science agency, knows his eyes can deceive him. A plant could look green and vital and still be losing—losing too much energy or losing too much water or filling its grain to ripeness too slowly. And while these weaknesses are invisible to the human eye, they're plain as day to the right instrument.

22:56
תפריט כתבה
דיווח על כתבה זו הסתרת כתבות מאתר זה המשך קריאה באתר המקור