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Diatomaceous earth is made from the fossilized remains of tiny, aquatic organisms called diatoms. Their skeletons are made of a natural substance called silica. Over a long period of time, diatoms accumulated in the sediment of rivers, streams, lakes, and oceans. Today, silica deposits are mined from these areas.

Silica is very common in nature and makes up 26% of the earth's crust by weight.Various forms of silica include sand, emerald, quartz, feldspar, mica, clay, asbestos,and glass. Silicon, a component of silica, does not exist naturally in its pureform. It usually reacts with oxygen and water to form silicon dioxide. Silicon dioxide has two naturally occurring forms: crystalline and amorphous. Most diatomaceous earth is madeof amorphous silicon dioxide. However, it can contain very low levels of crystallinesilicon dioxide. The first pesticide products containing silicon dioxide(diatomaceous earth) were registered in 1960 to kill insects and mites.

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Products containing diatomaceous earth are most commonly dusts. Other formulations include wettable powders and pressurized liquids. Currently, there are over 150 products registered for use inside and outside of buildings, farms, gardens, and pet kennels. Some products can also be used directly on dogs and cats. Diatomaceous earth products are registered for use against bed bugs, cockroaches, crickets, fleas, ticks, spiders, and many other pests.

There are thousands of non-pesticide products that contain diatomaceous earth. These include skin care products, toothpastes, foods, beverages, medicines, rubbers, paints, and water filters. The Food & Drug Administration lists diatomaceous earth as "Generally Recognized as Safe". "Food grade" diatomaceous earth products are purified. Theymay be used as anticaking materials in feed, or as clarifiers for wine and beer.

Diatomaceous earth is not poisonous; it does not have to be eaten in order to be effective. Diatomaceous earthcauses insects to dry out and die by absorbing the oils and fats from the cuticle of the insect's exoskeleton. Its sharpedges are abrasive, speeding up the process. It remains effective as long as it is kept dry and undisturbed.

People can be exposed to diatomaceous earth if they breathe in the dust, eatit, get it on their skin, or get it in their eyes. For example, when applying thedust or when entering a treated area before the dust has settled. Exposurescan also occur if products are accessible to children or pets. Exposure can belimited by reading and following label directions.

If breathed in, diatomaceous earth can irritate the nose and nasal passages. If an extremely large amount is inhaled,people may cough and have shortness of breath. On skin, it can cause irritation and dryness. Diatomaceous earth mayalso irritate the eyes, due to its abrasive nature. Any dust, including silica, can be irritating to the eyes.

When diatomaceous earth is eaten, very little is absorbed into the body. The remaining portion is rapidly excreted.Small amounts of silica are normally present in all body tissues, and it is normal to find silicon dioxide in urine. In onestudy, people ate a few grams of diatomaceous earth. The amount of silicon dioxide in their urine was unchanged.

After inhalation of amorphous diatomaceous earth, it is rapidly eliminated from lung tissue. However, crystalline diatomaceousearth is much smaller, and it may accumulate in lung tissue and lymph nodes. Very low levels of crystallinediatomaceous earth may be found in pesticide products.

When mice were forced to breathe diatomaceous earth for one hour each day for a year, there was an increase in lungcancers. When rats were fed silica at a high dose for two years, there was no increase in cancer development.

Most diatomaceous earth is made of amorphous silicon dioxide. However, it can contain very low levels of crystallinesilicon dioxide. Amorphous diatomaceous earth has not been associated with any cancers in people.

In a rabbit study, researchers found no health effects after applying diatomaceous earth to the rabbits' skin five timesper week for three weeks. In a rat study, researchers fed rats high doses of diatomaceous earth for six months. Theyfound no reproductive or developmental effects. In another rat study, the only effect was more rapid weight gain. Thatstudy involved 90 days of feeding rats with a diet made of 5% diatomaceous earth.

When guinea pigs were forced to breathe air containing diatomaceous earth for 2 years, there was slightly more connectivetissue in their lungs. When researchers checked before the 2-year mark, no effects were found.

A very small amount of crystalline diatomaceous earth may be found in pesticide products. Long-term inhalation ofthe crystalline form is associated with silicosis, chronic bronchitis, and other respiratory problems. The bulk of diatomaceousearth is amorphous, not crystalline. The amorphous form is only associated with mild, reversible lung inflammation.

Silicon is a major component of diatomaceous earth. It is the second mostabundant element in soils. It's a common component of rocks, sands, andclays. It is also abundant in plants and plays a role in their growth anddevelopment. Due to its chemical makeup, diatomaceous earth is not degradedby microbes or by sunlight. Also, it does not emit vapors or dissolvewell in water.

Diatomaceous earth is practically non-toxic to fish and aquatic invertebrates. It is commonly encountered by birdsand other wildlife, and it's not known to be harmful. However, no toxicity evaluations for wildlife were found. Agencieshave stated that diatomaceous earth is unlikely to affect birds, fish, or other wildlife in a harmful way.

Diatomaceous earth is made of silicon dioxide. When chickens were fed a diet that contained less silicon dioxide than normal, their bone formation was harmed. This suggests that silicon dioxide plays an important role in bone formation.

A previous study demonstrated that connecting the human body to the earth during sleep (earthing) normalizes the daily cortisol rhythm and improves sleep. A variety of other benefits were reported, including reductions in pain and inflammation. Subsequent studies have confirmed these earlier findings and documented virtually immediate physiologic and clinical effects of grounding or earthing the body. It is well established, though not widely known, that the surface of the earth possesses a limitless and continuously renewed supply of free or mobile electrons as a consequence of a global atmospheric electron circuit. Wearing shoes with insulating soles and/or sleeping in beds that are isolated from the electrical ground plane of the earth have disconnected most people from the earth's electrical rhythms and free electrons. The most reasonable hypothesis to explain the beneficial effects of earthing is that a direct earth connection enables both diurnal electrical rhythms and free electrons to flow from the earth to the body. It is proposed that the earth's diurnal electrical rhythms set the biological clocks for hormones that regulate sleep and activity. It is also suggested that free electrons from the earth neutralize the positively charged free radicals that are the hallmark of chronic inflammation. A relationship between cortisol and inflammation was established in the pioneering work of H. Selye published in the 1950s. Current biomedical research has led to an inflammation hypothesis that is establishing chronic inflammation as the culprit behind almost every modern chronic illness. The research summarized here and in subsequent reports provides a basis for a number of earthing technologies that restore and maintain natural electrical contact between the human body and the earth throughout the day and night in situations where going barefoot on the earth is impractical. It is proposed that free or mobile electrons from the earth can resolve chronic inflammation by serving as natural antioxidants.

A satellite in orbit around the earth cannot see half of the earth because of a simple geometric effect known as perspective. As shown in the diagram, when an observer is looking at a sphere, he can only see the portion of the sphere that lies in front of the points where his line of sight is tangential to the sphere. The closer the observer is to a sphere, the less he can see. The line marking the point where the earth begins curving out of view is called the horizon. It is the same horizon that you see when standing on the earth and observing the sky meet the ground in the distance. While hills and other local ground height variations affect the distance to the horizon, these variations are so small compared to the height of satellites that they can be mostly ignored.

As d becomes much larger than R, this equation shows that the visible area approaches fifty percent of the sphere's surface. But to see exactly half of the sphere, the observer would have to be infinitely far away. To a good approximation, the earth is a sphere and the satellites are distant observers. The point where the earth curves away out of view is known as the horizon. The earth's radius is about 6370 kilometers (3960 miles). A person walking around on the surface of the earth has his eyes elevated about 0.002 km (6 feet) away from the surface. Using this equation, if the earth were perfectly spherical, then a person standing on earth's surface can see about 0.000016% of the earth's surface, or about 82 square kilometers (32 square miles). This corresponds to a circle of visibility with a radius of about 5 km (3 miles). In other words, if you stand on the beach at the water's edge and look out over the calm ocean, the farthest you can see boats before they begin to disappear below the horizon is about 5 km. Naturally, getting up away from the earth's surface will increase your view. For instance, standing on top of a typical mountain with an elevation of 1 km will improve your visibility to 0.0078% of the earth' surface, which is about 40,000 square kilometers (15,000 square miles), such that the horizon is about 110 km (70 miles) away. Often, other mountains, trees, and even the atmosphere itself reduces the visibility. e24fc04721