Nuclear Weapons And Their Hazards
.... Hemisphere, this could occur through acute
climatic conditions which chilling or freezing temperatures occurring for
brief periods during the growing season which could destroy crops or lower
production. As result of the variety of potential physical and societal
disruptions to agriculture from a large-scale nuclear war, agriculture in
the Northern Hemisphere could be shut down or significantly reduced for the
first growing season after war and maybe several growing seasons. Only the
major grain-producing countries such as United States, Canada, and
Australia had enough stored food to keep their populations alive if they
lost t .....
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Human Impact On Air And Climate
.... of the sun and
volcanic emissions both played an important role in governing climate
variations over the period studied. But over the past few decades,
greenhouse gases produced by human activities appear to have had an
increasing influence on temperatures. "The anomalous warmth of several
recent years appears likely to be related to human influences on climate,"
said Mann. The study bears out concerns voiced by scientists in recent
years regarding global warming, Bradley said. It is known that
industrialization during the past century has increased levels of carbon
dioxide in the Earth's atmosphere by more than 25 perce .....
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The Shrew
.... used for young or as a resting place for groups of
adult shrews.
Compared to most types of shrews, the least shrew is sociable, and
several may be kept together in captivity without conflict. They sleep
together and help eachother to some degree in digging tunnels and finding
food. One nest found in December in Texas contained a dozen shrews that
seemed to be staying there for the winter; another examined near
Nacogdoches was occupied by at over 31 shrews.
These small shrews are active all hours of the day, but the most
activity comes at night. They are difficult animals to trap except in
winter when the supply of food is low .....
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American Pit Bull Terrier
.... has had many. The point is, APBT get a bad name because of the people who own them. In doing research for this paper I have become deeply fascinated with this breed and actually understand a great deal more about the APBT than the average person. But to understand more about the APBT, you must understand its history and its impact on society.
The American Pit Bull Terrier (APBT) is a descendent of the original English bull-baiting Bulldog and has historically been bred with working/performance goals in mind ( Stahlkuppe p.7). The challenge of describing the APBT invites a long sequence of superlatives. The APBT is a supremely .....
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Where Do We Draw The Line?
.... step carefully into this vast new field of science with the understanding that putting a patent on the melanoma gene or the baldness gene for that matter is simply playing God in a potentially dangerous way.” (Appleyard, Bryan, Jan 98, Smithsonian)
These are only a few examples of scientific developments that in my mind raise the question: Where do we draw the line in science? Mr. Appleyard could not have been more on point in his allusion to Aldous Huxley’s novel “Brave New World” which along with Mary Shelley’s novel “Frankenstein” raises the same question regarding our advancements in science. Where do we draw that line? I .....
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Interstellar Travel: Sooner Or Later?
.... discovery of a means to exceed light speed, discovery of a means to propel a vehicle without propellant, and discovery of a means to power such devices. Why? - Because space is big, really, really, really big." (Why is Interstellar) For any human to ever reach another star, speeds greater than comprehension would be needed. Millis illustrates this idea on his web site, "The most obvious challenge to practical interstellar travel is speed. Our nearest neighboring star is 4.3 Light Years away. Trip times to reach our nearest neighboring star at conventional speeds would be prohibitively long. At 55 miles-per-hour for example, .....
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Preservation Of The Environment
.... also include potentially lethal problems such as contamination with pesticides and fecal coliform bacteria. Things must be done in order to preserve NJ environment.
The enforcement of laws against pollution is one of the things being done to preserve NJ environment.In theory, a regional EPA office can take its own enforcement action where the state has failed to do an adequate job.After several years of appeals, the Eighth Circuit Court of Appeals ruled in early September that the EPA had no right to overfile. This could have a massive chilling effect on enforcement. Supposing a company is caught dumping toxic waste on its prop .....
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Fusion: Our Future's Energy?
.... uses an element that is hard to find and which will eventually run out. Also, the reaction cannot be easily stopped and if it can't be stopped, a nuclear meltdown can occur. This is a serious environmental concern.
Fusion is different. It is a process that combines two nuclei into one, releasing an amount of energy that is far greater than that of fission. In a common type of reaction, two isotopes of hydrogen, deuterium and tritium fuse together, making helium and a neutron. A small amount of the mass produced is converted into an enormous burst of energy.
Difficulty Of A Fusion Reaction
The main difficulty in a fusion re .....
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Renewables, The Energy Source For America’s Future
.... at a rate one hundred thousand times faster than they are being formed. As supplies decrease we become more and more dependent on the Middle Eastern countries for our supplies of oil, recently, fifty-two percent of imported oil came from such countries. The most significant drawback is the amount of pollution produced by fossil fuels.(5)
These negative impacts can be lessened and even eradicated through the use of renewable energy. There are several forms of renewable energy, with wind and solar power being the most effective.
Wind power is produced by numerous large structures known as wind turbines. Wind turbines con .....
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Acid Rain
.... environment because of its low pH. It can harm the biotic components of earth, and also the abiotic components. It's high acidity degrades soil to the point where it cannot support any type of plant life. Trees in forests are killed over long-term exposure. When these trees are killed, an imbalance in the hydrologic cycle can occur. Without living trees to consume the precipitate, it must be consumed by the earth or any other plants. These will receive an excess of water, causing other problems in the hydrologic cycle. This in turn causes a chain reaction of death among our forests. Some regions are more susceptible to acid rain. .....
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The Effects Of Processing Vegetables
.... was designed to test if the processing of a carrot produces gas. In turn discovering the health related differences of canned, frozen and fresh carrots. Canning is a process of hermetically sealing cooked food for future use (Encyclopedia.com, 1999). This process is also called sterilization because it involves exposing the food to high temperatures for only minutes or seconds to protect against all the harmful microorganisms and other spoilage agents. Freezing is a process that prevents harmful microorganisms from multiplying, not necessarily killing them as in canning. Vegetables are lightly heated in preparation for freezing .....
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Genetic Engineering
.... as living factories for the production of pharmaceuticals and as sources of organs for transplantation into humans in the United States and abroad. Fish are being genetically engineered to grow larger and at a faster rate.
According to U.S. News and World Report, many pharmaceutical drugs, including insulin, are already genetically engineered in the laboratory. Many enzymes
used in the food industry, including rennet used in cheese production, are also available in genetically engineered form and are in widespread use.
Genetic screening is already used to screen for some hereditary conditions. Research is ongoing in the use .....
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