.... the one before. Chronic depression is a low grade, long-term depression that can go on for years. Some people have had it most of their lives. Long term, low-grade depression is also known as dysthymia. Dys, meaning disorder, and thymia meaning mood. Dysthmia is then a disorder of ones mood. The last type is manic depression. The lows of this depression can alter with days or weeks of maniaextreme feelings, unreasonable thoughts, and inappropriate, sometimes destructive behavior. The manic-depressive person fluctuates from one emotional pole to another, often in rapid swings. 3 Th .....

.... foundation in London of the Society for Psychical Research (1882) which sought to distinguish psychic phenomena from spiritism and to investigate mediums and their activities." (http://wheel.ucdavis.edu) The research started over one hundred years ago and their goal was to understand why unexplainable phenomena was occurring. "Modern experiments, notably at Duke University under Joseph Banks Rhine, in Britain at the Society for Psychical Research and in Russian research labs, have concentrated principally on extrasensory perception, psychokinesis, and astral projection." (http://wheel.ucd .....

.... cities. Once estab-lished the settlers needed more room for farms and bigger cities so again they pushed into the forest causing the Na-tive Americans and the wildlife to withdraw further into interior of the continent. Let us move forward a hundred or so years in history the settling of the American Great Plains. One of the big-gest violations of the environment was taking place, the buffalo hunters, and the extermination of the Native Ameri-cans and their culture. The Great Plains, before the arri-val of the buffalo hunter must have been a remarkable sight. The countryside must have lo .....

.... any form of cancer in humans. Contrary to what environmentalist attacks on the pesticide have alleged, the benefits of DDT far exceed the flaws. DDT was first synthesized in 1887 and patented as an insecticide in 1939 by a Swiss chemist, Dr. Paul Müller (Whelan 69). It initially became popular because of its effectiveness against insects, specifically clothes moths and parasites of both animals and plants. DDT was welcomed as a substitute for toxic insecticides like arsenic, mercury, fluorine, and lead (Whelan 70). It was used by the Allied troops during World War II in order to ki .....

.... two inches per year they are driven by convection currents which is the upward movement of heated particles rising from the earth's molten core. As the plates are driven against each other one will try to and eventually will slip underneath the other. When plates move quickly an earthquake is the result. Before the availability of instruments capable of a quantitative measure of their magnitude, were classified according to their intensity. In 1931 a seismologist came up with twelve degrees of intensity ranging from I (felt only by a few) to XII (total damage) this was called a Modif .....

.... in the test section of the tunnel and instruments are placed on the model to record the aerodynamic forces acting on the model. Types of Wind Tunnels There are four basic types of wind tunnels. Which are low subsonic, transonic, supersonic, and hypersonic. The wind tunnels are classified by the amount of speed they can produce. The subsonic has a speed lower then the speed of sound. The transonic has a speed which is about equal to the speed of sound (Mach 1 760 miles per hour at sea level). . The supersonic (Mach 2.75 to 4.96) has a speed of about five times the speed of sound And the .....

.... is that the toxic metals dissolved in the water are absorbed in fruits, vegetables and in the tissues of animals. Even though these toxic metals do not directly affect the animals, they have serious effects on humans when they are being eaten. How did it happen? One of the main causes of acid rain is sulphur dioxide. Natural sources that let out this gas are volcanoes, sea spray , rotting vegetation and plankton. However, the burning of fossil fuels, such as coal and oil, are largely to be blamed for about half of the emissions of this gas in the world. When sulphur dioxide gets in the .....

.... including self-pollination. Evolutionary Origins Plants derived from an aquatic ancestor, but the evolution of their conducting tissues, cuticle, stomata, and seeds has made them progressively less dependent on water. The oldest plant fossils date from the Silurian Period, some 430 million years ago. The common ancestor of plants was a green alga. The similarity of the members of these two groups can be demonstrated by their photosynthetic pigments (chlorophyll a and b,) carotenoids); chief storage product (starch); cellulose- rich cell walls (in some green algae only); and cell divis .....

.... on March 11, 1974. The production F-16A differed from the YF-16 in having a 13-inch fuselage extension to hold more fuel and the Westinghouse APG-66 radar. The wing area was increased by 20 square feet and an additional underwing hardpoint was fitted. The first YF-16 was brought out on December 13, 1973 to make its first test flight at Fort Worth and was air freighted by C-5A to Edwards AFB on January 8, 1974. It was an unintended short hop around the pattern on January 21, 1974 at the hands of the test pilot Phil Oestricher. During high-speed ground tests at Edwards, Oestric .....

.... philosophy. Through the years we have developed tools that we hope can prove or disprove various hypothesizes, to further our understanding of any number of things. We divide science into categories and then sub-divide it even farther, until we can hide the connections and pretend that they really are separate. The difference between psychology and physics is not as extreme as one would believe if they were to read their definitions. Though the means are different the goal is the same for all science: to increase our understanding of our earthly domain, and to improve ourselves. The Greeks .....