Новости за 09.02.2024

In the fall of 1989, the Galileo spacecraft was launched into space, bound for Jupiter and its family of moons. Given the great distance to the king of planets, Galileo had to take a roundabout tour through the inner solar system, making a flyby of Venus in 1990 and Earth in 1990 and 1992 just to gain enough speed to reach Jupiter. During the flybys of Earth Galileo took several images of our planet, which astronomers have used to discover life on Earth.

Participation in a science, technology, engineering and math (STEM) apprenticeship program increased job happiness, finds a new study from the Brown School at Washington University in St. Louis.

Recent breakthroughs in spatial biology technology have transformed biomedical research; however, legal disputes are preventing small, innovative companies from advancing new technologies and ideas.

Students' knowledge and perceptions of active learning declined significantly during COVID-induced remote teaching and have not recovered to pre-pandemic levels, according to new research from Chapman University Assistant Professor Jeremy Hsu. The research was published in Active Learning in Higher Education.

When Lyndsay Conrad dove into her archival research on early 20th-century ski history in Alberta, she found women were missing in the standard narratives, yet leap out in old University of Alberta yearbooks from the 1930s.

The condensation of excitons with non-zero momentum can give rise to so-called charge density waves (CDW). This phenomenon can prompt the transition of materials into a fascinating new quantum phase, known as an excitonic insulator.

Researchers in the lab of John Kuriyan, professor of biochemistry and dean of the School of Medicine Basic Sciences, have revealed a key element of how a molecular machine responsible for high-speed DNA replication works. The results of their study build on growing theories of molecular evolution.

Semiconductors in modern electronics rely on small quantities of added impurity elements, called dopants, that alter the ability of the material to conduct electricity. While the role of these dopants is often straightforward, that isn't always the case. Electrons from dopants in complex oxides can behave in ways that are significantly different than those in conventional semiconductors, such as silicon.

Highly reducing or oxidizing photocatalysts are a fundamental challenge in photochemistry. Only a few transition metal complexes with Earth-abundant metal ions have so far advanced to excited state oxidants, including chromium, iron, and cobalt. All these photocatalysts require high energy light for excitation and their oxidizing power has not yet been fully exploited. Furthermore, precious and hence expensive metals are the decisive ingredients in most cases.

A Chinese team of life scientists, microbiologists, plant researchers and seed designers has developed a way to grow engineered moss with partially synthetic genes. In their project, reported in the journal Nature Plants, the group engineered a moss that is one of the first living things to have multiple cells carrying a partially artificial chromosome.

Engineers at the University of Cincinnati have created a more efficient way of converting carbon dioxide into valuable products while simultaneously addressing climate change.

The looming threat of climate change has motivated scientists worldwide to look for cleaner alternatives to fossil fuels, and many believe hydrogen is our best bet. As an environmentally friendly energy resource, hydrogen (H2) can be used in vehicles and electric power plants without releasing carbon dioxide into the atmosphere.

A team of geologists affiliated with several institutions in France, working with a pair of colleagues from Albania, has measured the largest natural flow of hydrogen ever in an Albanian chromium mine. In their study, reported in the journal Science, the group measured hydrogen gas bubbling up through liquid pools in the mine.

A multi-institutional team of astronomers, Earth scientists and planetary physicists has found evidence, via data from the James Webb Space Telescope (JWST), that some hycean exoplanets may have molten surfaces rather than watery oceans. In their study, published in The Astrophysical Journal Letters, the team analyzed data from JWST as it was focused on the hycean exoplanet K2-18b.

Using the Five-hundred-meter Aperture Spherical radio Telescope (FAST), astronomers from the Nanjing University in China and elsewhere, have detected a radio pulsar in a supernova remnant known as CTB 87. The finding is reported in a paper published February 1 on the arXiv pre-print server.

For anyone who's shopped at Trader Joe's, it's already a familiar choice: You can carry your groceries out in a paper bag or perhaps a spare cardboard box, in a tote you brought from home or—if you're shopping lightly/daringly—by hand.

Supporters of wetland legislation approved 6 Feb. by the Indiana legislature say the regulations are fair to residents, property owners, agriculture and developers while those against it say the state has already weakened wetland protections and this will only serve to damage sensitive ecosystems, increase flooding and decrease water quality.

U.S. Fish and Wildlife Service officials have moved forward with plans to consider restoring grizzly bear populations to a part of Idaho where they haven't been seen regularly in decades, all while Idaho's governor and congressional delegation continue to try to remove endangered species protections for the bears.

Mega high tides known as king tides are hitting beaches Feb. 9, giving a glimpse at what future sea level rise could mean for coastal towns and shorelines across California.

Paleontology enthusiasts have unearthed one of the world's richest and most diverse fossil sites from the Lower Ordovician period (around 470 million years ago). Located in Montagne Noire, in the Hérault department of France, this deposit of over 400 fossils is distinguished by an exceptionally well-preserved fauna.

Ordinarily, planets in evolved planetary systems, such as the solar system, follow stable orbits around their central star. However, many indications suggest that some planets might depart from their birthplaces during their early evolution by migrating inward or outward.

Cosmic dust—like dust on Earth—comprises groupings of molecules that have condensed and stuck together in a grain. But the exact nature of dust creation in the universe has long been a mystery. Now, however, an international team of astronomers from China, the United States, Chile, the United Kingdom, Spain, etc., has made a significant discovery by identifying a previously unknown source of dust in the universe: a Type 1a supernova interacting with gas from its surroundings.

Materials just atoms in thickness, known as two-dimensional (2D) materials, are set to revolutionize future technology, including in the electronics industry. However, commercialization of devices that contain 2D materials has faced challenges due to the difficulty in transferring these extremely thin materials from where they are made onto the device.

For millions of years, a variety of large herbivores, or megafauna, influenced terrestrial ecosystems. Among many others, these included elephants in Europe, giant wombats in Australia, and ground sloths in South America. However, these animals experienced a wave of extinctions coinciding with the worldwide expansion of humans, leading to dramatic but still not fully understood changes in ecosystems. Even the survivors of these extinctions strongly declined, and many are currently threatened with extinction.

Pollutants from burning fossil fuels have been found embedded in corals, for the first time, offering scientists a potential new tool to track the history of pollution, finds a new study led by UCL researchers.