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What Is a Temporary Insanity Plea?

The plea of temporary insanity is usually entered in order to relieve a person of criminal responsibilities due to mental conditions beyond the person's control. In other words, under certain circumstances, a person on trial may plead not guilty for doing the crime because he is not in his right...

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How Does a Retinal Scan Work?

Retinal scans are used in many security systems. It is a form of an identification system, and considered to be safer than access cards (which can be stolen or faked). Retinal scans are based on the principle that each human eyeball is unique. This was confirmed in the 1930s, though it took several...

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What Are Free Radicals?

Free radicals cause skin aging and tissue damage. These are unstable molecules in the body that bond with other molecules—causing otherwise healthy tissue to become weak or damaged. A few free radicals can thus lead to a domino effect. This is how it works. A stable molecule has an even number...

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Los Angeles Squirrel Tests Positive for Plague

A Los Angeles area squirrel tests positive for plague.  The Los Angeles County Public Health Director Jonathan Fielding has reported that the Los Alamos Campground within the Angeles National Forest has been shut down after a captured squirrel tested postitive for the plague.  The campground...

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What Is an Incisor?

An incisor is one of the eight teeth in the front of the mouth with straight cutting edges. These teeth are in the shape of a chisel and are sharp. When chewing food, the incisors’ task is to grasp, cut and gnaw food before passing it on to the rest of the teeth. The eight incisors are divided...

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What Is Hemoglobin?

Hemoglobin is the oxygen transporter in the red blood cells of all invertebrates, and is produced in the bone marrow. As the red blood cell travels through the vessels, it transports oxygen from the lungs towards the brain and other active organs, exchanges it for carbon dioxide, then circles back...

Tap Water in 31 U.S. Cities Contains Carcinogen Hexavalent Chromium

Tap Water in 31 U.S. Cities Contains Carcinogen Hexavalent Chromium

A probable carcinogen Hexavalent Chromium, a probable carcinogen, has been detected in the drinking water of 31 cities within the United States. The Environmental Working Group sampled and analyzed drinking water across the nation. The group determined the same substance made famous by the film...

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What Is a Diolite Laser?

Diolite laser falls under the wider category of diode lasers and is used in cosmetic surgery. The main use of diolite laser is for lesions in the skin that are either pigmentation problems or vascular issues. Examples of pigmented lesions are freckles, liver spots, keratosis (slight bumps of...

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What Is Streptomycin?

Streptomycin is a kind of antibiotic drug, and gained renown for being the first antibiotic to be used against tuberculosis. It belongs to a group of drugs known as aminoglycosides. Streptomycin is a very strong antibiotic and is used to treat severe illnesses. This antibiotic cannot be taken...

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How Do I Take Care of Newly Pierced Ears?

Body piercing is an age old custom, and while other sorts of piercing may still not be accepted widely, ear piercing is very common. Having pierced ears may traditionally be for women, but more and more men are also getting their ears pierced these days. You can get your ears pierced by a doctor,...