Scientists at the University of Granada, in collaboration with La Paz University Hospital in Madrid and the University of Texas, San Antonio in the US have demonstrated through several experiments conducted on Zucker obese ...
Oct 3, 2014
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Despite artificial lightning and social conventions, the dynamics of daylight still influence the daily activities of people living in modern, urban environments, according to new research published in PLOS Computational ...
Nov 21, 2017
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Contaminated food causes 48 million illnesses, 128,000 hospitalizations and 3,000 deaths each year in the United States. In his new book, "Outbreak: Foodborne Illness and the Struggle for Food Safety," published by the University ...
Jun 13, 2019
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After a lightning strike, thunder can be heard for a short period of time. This is due to the fact that the surrounding material that was struck by lightning absorbs the light, and as a result of the conversion of this light ...
May 12, 2022
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(Medical Xpress)—It's no accident that Dr. Aram Attarian is an expert on camping and outdoor adventure safety. Attarian, a professor of parks, recreation and tourism management at NC State University, has spent 35 years ...
Oct 22, 2012
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Research at the Technical University of Ilmenau has shown that rainwater on the scalp can reduce damage caused by direct lightning strikes to the head. When the scalp is wet, fewer impacts are recorded compared to dry scalp, ...
Feb 12, 2024
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Researchers at NYU Langone Medical Center have captured images of the underlying biological activity within brain cells and their tree-like extensions, or dendrites, in mice that show how their brains sort, store and make ...
Mar 30, 2015
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As many as one-third of sufferers of migraine with aura experience forewarning symptoms even the day before an attack that might create an opportunity for intervention and prevention. Later during the actual migraine episode ...
Jun 1, 2011
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Nearly two decades after Manhattan's Twin Towers fell in history's deadliest attack on US soil, the coronavirus pandemic is once again testing the storied mettle of New Yorkers.
Apr 26, 2020
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University of Cincinnati (UC) researchers have found that lightning may affect the onset of headache and migraines.
Jan 24, 2013
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Lightning is an atmospheric discharge of electricity accompanied by thunder, which typically occurs during thunderstorms, and sometimes during volcanic eruptions or dust storms. In the atmospheric electrical discharge, a leader of a bolt of lightning can travel at speeds of 60,000 m/s (130,000 mph), and can reach temperatures approaching 30,000 °C (54,000 °F), hot enough to fuse silica sand into glass channels known as fulgurites which are normally hollow and can extend some distance into the ground. There are some 16 million lightning storms in the world every year.
Lightning can also occur within the ash clouds from volcanic eruptions, or can be caused by violent forest fires which generate sufficient dust to create a static charge.
How lightning initially forms is still a matter of debate: Scientists have studied root causes ranging from atmospheric perturbations (wind, humidity, friction, and atmospheric pressure) to the impact of solar wind and accumulation of charged solar particles. Ice inside a cloud is thought to be a key element in lightning development, and may cause a forcible separation of positive and negative charges within the cloud, thus assisting in the formation of lightning.
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