Reversions to virgin births by asexual reproduction are rare in nature. Asexual birth, in Cape honey bees, might be the first time that the genetic basis of such a phenomenon has been discovered. In a study published in Current Biology, researchers from the University of Sydney have identified the single gene that determines how Cape ...
Through the noise, young stars reveal their inner workings. An Australian-led team has solved the mystery of how some rapidly rotating young stars pulsate. Delta Scuti stars can now be studied in more detail thanks to the work of Professor Tim Bedding and colleagues. By listening to the beating hearts of these, astronomers have identified ...
‘Murder hornets’ have entered the North American landscape and lexicon with horror-film imagery. Vespa mandarina – also known as Asian giant hornets – are thumb-sized carnivores with huge mandibles, outsized appetites, and a venomous sting that will leave a human writhing in pain. But the biggest threat these “murder hornets” pose is to the vulnerable apiary industry ...
Health practitioners are constantly developing new ways to help those with drug and alcohol addictions wean themselves from their substance of choice. Most such programs have limited success, however. A new study finds that interventions that take a multidimensional approach — tackling the biological, social, environmental, and mental health obstacles to overcome while also addressing ...
Using the data obtained by the Five-hundred-meter Aperture Spherical radio Telescope (FAST), a research team led by Prof. Pan Zhichen and Prof. Li Di from the National Astronomical Observatories of the Chinese Academy of Sciences (NAOC) discovered an eclipsing binary millisecond pulsar in Globular Cluster (GC) Messier 92 (M92). Named PSR J1717+4307A or M92A, it ...
Chinese researchers have developed a pulsed optically pumped (POP) atomic clock with frequency stability of 4.7 × 10-15 at 104 seconds based on a new design. The achievement is noteworthy because atomic clocks — often considered the most stable frequency standard for timekeeping — are crucial components in global navigation systems and international communication services, ...
Straw incorporation — shredding and burying straw — has been widely promoted as an environmentally-friendly method to increase soil organic carbon stocks and improve soil fertility. Scientists have also found crop straw incorporation could help reduce ammonia volatilization from fertilized fields, which contributes to the formation of fine particles, thereby resulting in serious air pollution. ...
Since its discovery in 2017, an air of mystery has surrounded the first known interstellar object to visit our solar system, an elongated, cigar-shaped body named ‘Oumuamua (Hawaiian for “a messenger from afar arriving first”). A new scenario based on computer simulations accounts for all of the observed characteristics of the first known interstellar object ...
Earth’s molten core may be leaking iron isotopes, according to researchers who analyzed how iron behaves inside our planet. The boundary between the liquid iron core and the rocky mantle is located some 1,800 miles (2,900 km) below Earth’s surface. At this transition, the temperature drops by more than a thousand degrees from the hotter ...
An unusual skullcap and thousands of clues have created a southern twist to the story of human ancestors, in research published in Science. The rolling hills northwest of Johannesburg are famous for fossils of human-like creatures called hominins. Because of this, the area is known as the Cradle of Humankind. Stephanie Baker, who is a researcher ...
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