Lead
hideLead (pronounced /ˈlɛd/) is a main-group element with symbol Pb (Latin: plumbum) and atomic number 82. Lead is a soft, malleable poor metal, also considered to be one of the heavy metals. Lead has a bluish-white color when freshly cut, but tarnishes to a dull grayish color when exposed to air. It has a shiny chrome-silver luster when melted into a liquid.
Lead is used in building construction, lead-acid batteries, bullets and shot, weights, and is part of solder, pewter, fusible alloys and radiation shields. Lead has the highest atomic number of all stable elements, although the next element, bismuth, has a half-life so long (longer than the estimated age of the universe) it can be considered stable. Like mercury, another heavy metal, lead is a potent neurotoxin that accumulates in soft tissues and bone over time. Lead poisoning was documented in ancient Rome, Greece, and China.
For more information about Lead, read the full article at
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News tagged with lead
Young adults' blood lead levels linked to depression, panic disorder
Medicine & Health / Psychology & Psychiatry
12 hours ago |
3 / 5 (3) |
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Young adults with higher blood lead levels appear more likely to have major depression and panic disorders, even if they have exposure to lead levels generally considered safe, according to a report in the December issue ...
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Urine test for pediatric obstructive sleep apnea possible
Dec 07, 2009 |
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Researchers at the University of Chicago have discovered a technique that is able to determine whether a child has obstructive sleep apnea (OSA) or habitual snoring by screening their urine.
Don't I know you? Research sheds light on memorial retrieval
Medicine & Health / Neuroscience
14 hours ago |
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We have all had the embarrassing experience of seeing an acquaintance in an unfamiliar setting. We know we know them but can't recall who they are. But with the correct cues from conversation or context, something seems ...
Study shows nearly 1/3 of human genome is involved in gingivitis
20 hours ago |
4.7 / 5 (3) |
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Gingivitis, which may affect more than one-half of the U.S. adult population, is a condition commonly attributed to lapses in simple oral hygiene habits. However, a new study shows that development and reversal of gingivitis ...
New technology could boost disease detection tests' speed and sensitivity (w/ Video)
Nanotechnology / Bio & Medicine
14 hours ago |
5 / 5 (1) |
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A team led by Yale University scientists has developed a way to rapidly manipulate and sort different cells in the blood using magnetizable liquids. The findings, which will be published the week of December ...
Antidepressant Can Change Patient's Personality
Medicine & Health / Psychology & Psychiatry
14 hours ago |
4.1 / 5 (7) |
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(PhysOrg.com) -- The nation is still debating the effects of antidepressant medications on brain chemistry almost 20 years after publication of the best-seller "Listening to Prozac." Though selective serotonin reuptake inhibitors ...
Amazon's Kindle to get audible menus, bigger font
Electronics / Consumer & Gadgets
12 hours ago |
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(AP) -- Amazon.com Inc. will add two features to the Kindle e-book reader to make the gadget more accessible to blind and vision-impaired users.
New computer model could lead to safer stents
19 hours ago |
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After suffering heart attacks, patients often receive stents designed to hold their arteries open. Some of these stents release drugs that are meant to halt tissue growth in arteries, but can have life-threatening side effects ...
Study shows gene positions may aid cancer diagnosis
20 hours ago |
5 / 5 (1) |
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Certain genes switch their nuclear position in tumor cells, offering a potential new method of diagnosing cancer, say researchers from the National Cancer Institute. The study by Meaburn et al. will be published ...
H1N1 more risky than seasonal flu in children with sickle cell disease
20 hours ago |
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Infection with the H1N1 virus, or swine flu, causes more life-threatening complications than seasonal flu in children with sickle cell disease, according to research from Johns Hopkins Children's Center. The findings, to ...
Not all parents place their babies 'back to sleep,' research finds
12 hours ago |
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Placing infants on their backs for sleep can help reduce the risk of Sudden Infant Death Syndrome (SIDS). But a study by Yale School of Medicine researchers and their colleagues shows that while the practice helped reduce ...
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