.... began when she was seven. Often in school she would have the classic migraine symptoms- she would see only half of her teacher and bright lights and flashes up to 20 minutes before her Migraine began. These symptoms are called auras and once they are gone the Migraine begins. The Migraine itself can lead to vomiting, slurred speech, makes the sufferer sensitive to light and worsens when there is a lot of noise. The mechanism is not completely understood, but many women have their most severe attacks during or just before their menstrual period. This is supposedly due to the hormonal imb .....

.... rainforests. This drudges wildlife from its natural home and into the havoc that is ours. Millions of acres of beautiful land are destroyed daily to satisfy the needs of mankind. But has anyone contemplated the needs of our wildlife? When their homes are incinerated, where do they run for shelter? Where will wildlife obtain its food and oxygen if the sources are gone? Not much is done about our destructive ways, we sit back and let money and greed take power. The solution is just a whisper away. The preserved areas should remain untouched. Hunting should be outlawed in these prote .....

.... occasionally wash away the smoke given off by power plants and cars, the cumulative effect of air pollution poses a grave threat to humans and the environment. In many places smoke from factories and cars combines with naturally occurring fog to form smog. Smog has been long recognized as a potential cause of death, especially for elderly persons and those with severe respiratory ailments (like asthma). Air pollution originally resulted from large-scale use of heating fuels (like coal and wood). Water Pollution Since the beginning of civilization, water has been used to carry away waste .....

.... been damaged by acid rain. This form of pollution has also particularly affected the northeastern United States and eastern Canada. Industrial emissions have been blamed as the major cause of acid rain. Because the chemical reactions involved in the production of acid rain in the atmosphere are complex and as yet little understood, industries have tended to challenge such assessments and to stress the need for further studies; and because of the cost of pollution reduction, governments have tended to support this attitude. Studies released by the U.S. government in the early 1980s, however, s .....

.... vapor above the liquid. At a temperature slightly above absolute zero, it is transformed into helium II, also called super fluid helium, a liquid with unique physical properties. It has no freezing point, and its viscosity is zero; it passes readily through minute cracks and pores and will even creep up the sides and over the lip of a container. Helium-3, the lighter helium isotope of mass 3, which has an even lower boiling point than ordinary helium, exhibits markedly different properties when liquefied. Because it is noncombustible, helium is preferred to hydrogen as the lifting .....

.... Canadian emissions contribute substantially to in the northeastern United States, for example, and much of the sulfur falling in eastern Canada is believed to originate in the United States. In 1986 the U.S. National Academy of Sciences acknowledged that from U.S. sources had become a serious problem in the eastern United States and Canada. Although the Canadian government has agreed to reduce sulfur dioxide emissions, the United States has not placed limitations on its sulfur emissions that may drift into Canada. Scientists agree that is harmful, but reports concerning its severit .....

.... him this wish, and he began to sing a high-pitched song. When he was finished with his song, he jumped overboard and was saved by a dolphin which carried him two hundred miles to shore. Obviously, dolphins and humans have been interacting together throughout recorded history. According to the theory of evolution, it is most likely that the dolphin was once a land mammal. It is likely that sixty million years ago a cow, the distant cousin of the dolphin, decided to take his life to the sea. This is shown by the findings of hooves on dolphin fossils. The appearance of dolphins has int .....

.... lupus) can be found even though it used to roam most of western Europe as well. In Spain, two wolves have also been identified-Canis lupus deitanus and Canis lupus signatus. While the first is similar to many of the other European wolves, the latter may be more closely related to the jackal (Canis aureus), than to a wolf. The Caucasion Wolf (Canis lupus cubanensis) is found in many parts of eastern Europe and western Asia. The large tundra wolf of eastern Asia, the Tundra or Turukhan Wolf (Canis lupus albus), is very close in relations to the wolves of northern Alaska. In the Arctic Isla .....

.... of lymphatic fluid away from these tissues. The most frequently affected part is the leg. The most common cause of lymphatic obstruction is filaries. Filaries is caused chiefly by the species Wuchereria. When you have wherever it is located your skin will become rough and thickened like the skin of an elephant. Over 1 billion people in 73 countries are at risk of getting elephantiasis, and there are over 120 million people who already have it. New research has determined that albendazole, which has already become a standard treatment to fight intestinal parasites, is 99 perc .....

.... Harting and Hesse, who brought this to the public. The doctors found that 75 percent of the miner deaths were due to lung cancer. But with their scientific knowledge the doctors could only assume that the deaths were caused by the inhalation of arsenic. Later studies between 1900 and 1940 found that the deaths were caused by radiation in the mines. The radiation the miners were exposed to would later be identified as uranium. Uranium is a natural occurring element, it has a atomic count of 92. Uranium is easily identified by its properties. Uranium melts at about 1132°C, boils at abou .....