... for naturally occurring arsenic levels in drinking water was at 50 parts per billion and the proposition was made at 10 parts per billion. Person 3- Whitman charged at the time that the Clinton rule had been hastily crafted without adequate scientific study or consideration of the cost for small communities that would have to change their filtration systems to meet federal law. The review focused on alternative standards – ranging from as low as 3 parts per billion to as high as 20 parts per billion. Whitman states it is to dangerous to have the arsenic levels over 20 parts per billion. Person 4- Arsenic occu ...

... smog. The most famous London smog event occurred in December, 1952 when five days of calm foggy weather created a toxic atmosphere that claimed about 4000 human lives. Today, the use of other fossil fuels, nuclear power, and hydroelectricity instead of coal has greatly reduced the occurrence of industrial smog. However, the burning of fossil fuels like gasoline can create another atmospheric pollution problem known as photochemical smog. Photochemical smog is a condition that develops when primary pollutants (oxides of nitrogen and volatile organic compounds created from fossil fuel combustion) interact under ...

... have a meaning which can be deciphered if one looks deeply enough. In his view, the dreams concerns the dreamers past and present, and it arises from unknown regions within. He saw the dream as significantly analogous to a hysterical symptom. On the surface, they both appear meaningless and bizarre, but they become understandable when understood as veiled expressions of an unconscious clash between competing motives. Freud developed an elaborate theory and how the mind works while asleep. In 1953 sleep researchers led by Nathaniel Kleitman made the important discovery of rapid eye movement--or REM-- sleep. Curi ...

... were the first to uncover the BEC. They magnetically trapped rubidium atoms and then supercooled the atoms to almost absolute zero. The graphic on the cover shows the Bose-Einstien condensation, where the atom's velocities peak at close to zero velocity, and the atoms slowly emerge from the condensate. The atoms were slowed to the low velocity by using laser beams. The hardware needed to create the BEC is a bargain at $50,000 to $1000,000 which makes it accessible to physics labs around the world. The next step is to test the new phase of matter. We do not know yet if it absorbs, reflects,or refracts light. ...

... the lid off, the warm, moist air rises higher and higher. Heat energy, released as the water vapor in the air condenses. As it condenses it drives the upper drafts to heights of 50,000 to 60,000 feet. The cumuli become towering thunderheads. From outside the storm area, air moves in over the sea surface to replace the air soaring upwards in the thunderheads. The air begins swirling around the storm center, for the same reason that the air swirls around a tornado center. As this air swirls in over the sea surface, it soaks up more and more water vapour. At the storm center, this new supply of water vap ...

... carbon dioxide. This is the way the Earth keeps itself warm enough for humans to live on it. The only problem with this is that humans enhance the process even more. Over the past 200 years the emissions of greenhouse gases have been increasing due to the increase in technology that humans have developed (example, factories). These human-induced gases include carbon dioxide, methane, nitrous oxide, and ozone depleting substances such as CFCs, also known as Chlorofluorocarbons, hydrofluorocarbons, and perfluorocarbons. These gases are generated a number of human activities such as fossil fuel combustion, waste dis ...

... about everything conventional fuels can do but better. Hydrogen can be "packaged" in several ways, as a fuel gas in a H2/02 powered engine or the newly devised solid state pellet of hydrogen isotopes that contains about the equivalent of 5000 cubic feet of hydrogen and is broken down and releases gas into the second chamber where it goes to the engine for use. There are many ways to get pure hydrogen out of many compounds using methods such as electrolysis and chemical reactions. One of the easiest ways is using a chemical reaction. Simple chemicals (aluminum,sodium hydroxide, and water) can be reacted in the home ...

... have gained through any senses known to science. The first work on ESP was done by the Society for Physical Research in London founded a century ago. Scientists have run thousands of experiments to learn if minds indeed have supernatural powers. Most tests investigated one of the three main "faculties": telepathy, clairvoyance and precognition, collectively called extrasensory perseption (ESP) by American psycologist J.B. Rhine. Dating from the early 1930s, Rhine's tests at Duke University at Durham, North Carolina, remain the most quoted examples of an expirimental blitzkreig on problems of parapsychology. Three ...

... category would be the multifactorial disorders. Single-gene disorders result from errors within an individual gene. An example of one would be Huntington’s disease. This condition affects 1 in 10,000 and usually doesn’t affect the person until they are 30 or 40 years old. A person with this disease develops uncontrolled movements and may have problems with coordination, thinking, and judgment. A weakening of the nerve cells in the brain causes these symptoms and later results in death. Another single-gene disorder is the Tay Sachs Disease. People who inherit the faulty Tay Sachs gene lack ...

... and science have helped us in the search for an explanation of these mysterious floating objects. In actuality they haven't gotten us much further on the mission for proof of other living beings in the universe. But in a universe so incomprehensibly large that we no not even a boundary, I sincerely doubt that the human race is the only form of life. It seems certain scientists have come up with other hypotheses concerning UFO's. While all astronomers yearn for a concrete explanation on UFO's, their beliefs on their origin contrast. Many looking for a more scientific definition disregard UFO's as nothing more th ...