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Essays on Science

Interstellar Travel: Sooner Or Later?
Download This PaperWords: 1078 - Pages: 4

... to making the department practical and efficient. He has even crafted their web page himself. Recently on his “Warp Drive, When?” Web site Millis (a scientist, and leader of NASA’s Breakthrough Physics Propulsion lab) said, "The ideal interstellar propulsion system would be one that could get you to other stars as quickly and comfortably as envisioned in science fiction. Before this can become a reality, three scientific breakthroughs are needed: 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 ...



Chinese Shih Poetry And Philosophy
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... is based on the ideas of Confucius, the man who gave the school of thought its name. The main goal of Confucianists was to return a gentlemanly society to China. The core of Confucianism concerned social structure. Confucius taught that a man should respect and obey those of higher rank than himself, whether they be the father of a family, or the emperor of a nation. But even with absolute obedience, Confucianists believed that men should practice restraint and benevolence in those inferior to them. At the same time, those in high status were expected to lead virtuous lives, and to set examples for those that followed them. Confucianists believed ...



Dinosaur History
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... dig deeper down. The fossils get so deep because of the years of rocks and dirt that were piled up on it. Some also get buried if a dinosaur were to die next to a river, and over the years the river probably changed courses a little, so therefore the bones would be covered up. They would actually be in the bank of the river. The Evolutionary theory states that everything evolved over millions of years. Evolutionists say that dinosaurs came from six million years back. They also say that the Earth is four to six billion years old. They say that fifty million years ago there was horses no bigger than dogs, and birds as tall as man, three hundred million years ago ...



Genetics
Download This PaperWords: 1910 - Pages: 7

... transferring the nucleus of an embryo into another egg. As early as 1952, two scientists, Robert Briggs and T.J. King attempted what Spemann had suggested with a frog embryo and egg. Unfortunately, the frog egg did not develop. (Specter/Kolata) That same year, researchers in Pennsylvania cloned a live frog. The technique used was known as embryo twinning, or causing the embryo to split apart. It is much easier to clone with embryonic cells. Much later, mammals such as sheep were cloned using this process. (Nash 64) In 1970, John Gurdon repeated the procedure suggested by Hans Spemann. This time, the experiment yielded partial success. The tadpoles were bor ...



Cheetah
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... on the vast plains of Africa. There, they have plenty of room to run and keep track of their prey. At the same time, the tall grasses provide the cover to hunt successfully. territory is also likely to include lightly wooded areas where the s can rest safely and keep their cubs out of harm's way. The parry grass helps the in several ways it is one of the best objects to hide in for attack on other pray. It is also a good bedding source. The s cubs love to romp around in the grass for play and for practice for battle when they get older. This is the best all-round plant and helpful one for the . The up close, the is one of the smaller "big" cats. The largest wei ...



Introns And Exons
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... residue by a triphosphate bond this is called the G-cap. The G-cap is necessary for translation. The subunit of the ribosome recognizes the G-cap and then finds the initiation codon to start translation. As the mRNA comes finishes transcription, the Poly A tail is added to the 3¹ end. As the two ends are placed the mRNA becomes pre-mRNA. The pre-mRNA consists of splicing and non-coding regions. pre-mRNA molecules are much longer than the mRNA molecule needed to code for its protein. The regions that do not code for amino acids; aa, are scattered all along the coding region. The genes are split with coding regions, called exons, short for expressed ...



What Is Electricity
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... your bloodstream and collect in your finger, where they form a spark that leaps to your friends filling, then travel down to his feet and back into the carpet, thus completing the circuit. AMAZING ELECTRONIC FACT: If you scuffed your feet long enough without touching anything, you would build up so many electrons that your finger would explode! But this is nothing to worry about... unless you have carpeting. Although we modern persons tend to take our electric lights, radios, mixers, etc. for granted. Hundreds of years ago people did not have any of these things, which is just as well because there was no place to plug them in. Then along came the fi ...



Genetic Engineering. 2
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... States congress. Genetic engineering is a safe and powerful tool that will yield unprecedented results, specifically in the field of medicine. It will usher in a world where gene defects, bacterial disease, and even aging are a thing of the past. By understanding genetic engineering and its history, discovering its possibilities, and answering the moral and safety questions it brings forth, the blanket of fear covering this remarkable technical miracle can be lifted. The first step to understanding genetic engineering, and embracing its possibilities for society, is to obtain a rough knowledge base of its history and method. The basis for altering the evolutionary ...



False Memory Syndrome
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... out to different regions of the brain, memories then settle in the auditory cortex, and memories of its appearance into the visual cortex. Its here in the limbic system they assemble all these memories, gathering them into a cohesive whole. False memories are also commonly in the con drum called "source amnesia". Thanks to the brain's frontal lobes, most people can distinguish the memory of a dream and a real life event. But if the frontal lobes are damaged, people cannot remember where a memory came from. These people retrieve bits of memory and can't remember where they came from and could be remembering a dream. Source memory is highly prone to suggestion ...



Global Warming ------
Download This PaperWords: 847 - Pages: 4

... Climate change is a part of the Earth's history. There have been dramatic fluctuations in overall average temperature for the past 150,000 years that are a direct association with carbon dioxide levels. In the past the temperature highs and lows have been the same with carbon dioxide level highs and lows, this does not seem to be a mere coincidence. Carbon dioxide currently accounts for 0.03% of the gas content within the atmosphere. However, it has a adverse impact on the earth's temperature. Thus, minor fluctuations in the percentage of atmospheric carbon dioxide will likely have a significant effect on the global temperature. The percentage of atmospheric ...




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