Point defects (e.g. missing, extra or swapped atoms) in crystalline materials often determine the actual electronic and optical response of a given material. For example, controlled substitutions in semiconductors like silicon ...
Condensed Matter
May 23, 2024
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18
In the occupied far east of Ukraine, Russian forces are aiming waves of missiles against Ukrainian civilian targets. Each of Russia's state-of-the-art missile launch systems costs more than US$100 million (A$150 million). ...
Political science
May 22, 2024
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61
In recent years, with rapid urbanization, the global landscape of science and technology, industry, energy, and finance has undergone profound changes. Concurrently, emergencies or sudden events including natural disasters, ...
Environment
May 13, 2024
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0
What does the word nature mean to you? Does it conjure visions of wild places away from the hustle and bustle of people, or does it include humans too? The meaning of nature has changed since the word was first used back ...
Environment
May 13, 2024
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3
As climate change continues to warm the planet, scientists expect natural hazards such as flooding to increase. Urban flooding can be caused by extreme precipitation events, storm surges, or high tides, with dangerous and ...
Earth Sciences
May 10, 2024
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1
Using the James Webb Space Telescope (JWST), an international team of astronomers has explored young stellar objects (YSOs) in an open cluster known as NGC 346. The study, published April 24 on the preprint server arXiv, ...
Using data from ESA's Gaia satellite, astronomers from Turkey and India have investigated NGC 188—an old open cluster in the Milky Way. Results of the study, published April 19 on the pre-print server arXiv, deliver important ...
The return of spring in the Northern Hemisphere touches off tornado season. A tornado's twisting funnel of dust and debris seems an unmistakable sight. But that sight can be obscured to radar, the tool of meteorologists. ...
Earth Sciences
Apr 30, 2024
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4
The flight deck of a decommissioned World War II-era aircraft carrier docked at Alameda has recently begun launching something other than airplanes: microscopic droplets of salt water that scientists hope will help counteract ...
Environment
Apr 29, 2024
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7
An international team of archaeologists, paleontologists, evolutionists and geoscientists has analyzed ancient shark fossils from the time of the dinosaurs that were recently unearthed in Mexico. In their paper published ...
