A revolutionary new treatment for cataracts has shown extremely positive results in laboratory tests, giving hope that the condition, which currently can only be cured with surgery, could soon be treated with drugs.
May 16, 2022
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A new type of vaccine that can be stored at warmer temperatures, removing the need for refrigeration, has been developed for mosquito-borne virus Chikungunya in a major advance in vaccine technology. The findings, published ...
Sep 25, 2019
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Imagine a future technology that would provide instant access to the world's knowledge and artificial intelligence, simply by thinking about a specific topic or question. Communications, education, work, and the world as ...
Apr 12, 2019
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Writing in the April 30 online issue of the Journal of Steroid Biochemistry and Molecular Biology, researchers at University of California San Diego School of Medicine report pancreatic cancer rates are highest in countries ...
Apr 30, 2015
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As school buses drive down the gravel roads in Dunn County, North Dakota, they stir up more than dirt. The clouds of dust left in their wake contain such high levels of the mineral erionite that those who breathe in the air ...
Jul 25, 2011
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As artificial intelligence (AI) is increasingly used in radiology, researchers caution that it's essential to consider the environmental impact of AI tools, according to a focus article published in Radiology.
Feb 27, 2024
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The COVID-19 pandemic helped legitimize Wastewater-based Epidemiology (WBE) as a less invasive, cost-efficient way to monitor public health. WBE allows scientists to detect concentrations of drugs or biomarkers in sewage, ...
Dec 6, 2022
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As part of its partnership with Center to Stream Healthcare in Place (C2SHIP), Keck Medicine of USC has developed a new, interactive smart boot to help diabetic patients recover from dangerous foot wounds. The work was conducted ...
Feb 15, 2022
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The dust cloud caught Carl Sadler near the East River, turning his clothes and hair white as he looked for a way out of Manhattan after escaping from his office at the World Trade Center.
Sep 11, 2021
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Ask a three-year-old why they think it's raining, and she may say "because the flowers are thirsty." Her brother might also tell you that trees have leaves to provide shade for people and animals. These are instances of teleological ...
Aug 22, 2018
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A cloud is a visible mass of droplets or frozen crystals suspended in the atmosphere above the surface of the Earth or another planetary body. A cloud is also a visible mass attracted by gravity, such as masses of material in space called interstellar clouds and nebulae. Clouds are studied in the nephology or cloud physics branch of meteorology.
On Earth the condensing substance is typically water vapor, which forms small droplets or ice crystals, typically 0.01 mm in diameter. When surrounded by billions of other droplets or crystals they become visible as clouds. Dense deep clouds exhibit a high reflectance (70% to 95%) throughout the visible range of wavelengths. They thus appear white, at least from the top. Cloud droplets tend to scatter light efficiently, so that the intensity of the solar radiation decreases with depth into the gases, hence the gray or even sometimes dark appearance at the base. Thin clouds may appear to have acquired the color of their environment or background and clouds illuminated by non-white light, such as during sunrise or sunset, may appear colored accordingly. In the near-infrared range, clouds look darker because the water that constitutes the cloud droplets strongly absorbs solar radiation at those wavelengths.
This text uses material from Wikipedia, licensed under CC BY-SA
