PAPER Topics

... working on it. Much of it had to do with genetic engineering. In one of the projects they took smallpox, which has otherwise disappeared from the world, and found a way to genetically introduce into it, without reducing its efficacy as smallpox, either Ebola virus or equine encephalitis viruses. Nobody seems to know what happened to those experimental viruses. A third example: we now have plants genetically engineered to produce plastic. The idea is that we will no longer need to depend so much on petroleum, or on the Middle East for petroleum. The problem here, of course, is that the engineered plants cross-fertilize with their wild brethren, and since none of genetic ...

... for ourselves by passing it through a prism, or even through a jug of water, or as Nature demonstrates to us when she passes it through the raindrops of a summer shower and produces a rainbow. We also know that light consists of waves, and that the different colors of light are produced by waves of different lengths, red light by long waves and blue light by short waves. The mixture of waves which constitutes sunlight has to struggle through the obstacles it meets in the atmosphere, just as the mizture of waves at the seaside has to struggle past the columns of the pier. And these obstacles treat the light-waves much as the columns of the pier treat the waves. The long waves which cons ...

... similar way that can only be explained by an instinctive nature. Have young children changed their behavior since the 1700's? I suppose any child from any culture at any time in history would cry when it was upset, physically take whatever it wanted, need a certain amount of love and attention, and also be interested in exploring things outside of it's bounds. I feel that all of these instinctive behaviors seen in young children are emotions that I, as a young adult, have somehow came to deal wit as a part of society. Certainly other children, adolescents, and adults young and old alike understand this behavior or it would not be accepted. A person from any background or era in histor ...

... only main risk for black bears are poachers who sell their parts illegally to the Asian medicinal market. In northern areas of Canada, the bear undergoes a remarkable metabolic transformation as it prepares for hibernation. Hibernation is an energy-saving process bears have developed to let them survive for long periods when there is insufficient food available to maintain their body mass. When they stop eating and become increasingly lethargic, the bear will enter a cave; dig out a den; or hole up in a dense brush pile, hollow log or tree cavity and hibernate. Right before it does this it starts to gain weight so it can survive the long months ahead. It can gain as much as 30 pounds per we ...

... to boost the populations and has it been effective, and what can be done with dammed river to allow natural breeding? "Salmon Migration: Decisions, Decisions" no author Environmental News Thursday, "Columbia River Salmon Protection OK'd" no author Environmental News Tuesday, June 30, 1999 "Dam Busting Not Always the Best Decision" no author Thursday, December 31, 1998 "Columbia River Dams and the Decline of Northwest Salmon" A project developed by April Brenden, Laura Fetherston, Jonette Ford, and Shannon Nichols (Group 30), Biology 130 students at University of Oregon. Since early times, the rivers of the Pacific Northwest have been filled with salmon. In 1894 Richard Rathbun ...

... no guarantee you'll not get a big rip," (see terminology sidebar, page 57) says a Forest Service fire officer on the eastern seaboard. "When you're messing with fire, there's always a chance one will escape," echoes his counterpart in California's Sierras. "The fuels are tricky..." adds Ron Meyers, who directs prescribed fires for The Nature Conservancy from his base in Florida. Such concerns are real. Paul Tine, acting Forest Service fuels specialist for the sprawling eastern U.S. region, remembers well what he calls "the lowest day I've ever had in my 18-year career." As fire boss on a 40-acre prescribed burn on Minnesota's Superior National Forest in the '80s, he had t ...

... aircraft flying in formation. According to his estimate the aircraft were approximately the size of a DC-4 airliner ( Jackson 4). This account was the first sighting to ever receive a great deal of media attention. This sighting gave birth to the phrase "flying Saucer" coined by a reporter named Bill Begrette. Although not the first UFO sighting in history, Kenneth Arnolds account is considered to be the first documented UFO sighting. The following day Mr. Arnold discovered that in addition to his sighting there were several others in the Mount Ranier area that same day (Jackson 6). When most of think of UFO sightings we picture an unemployed, half- crazed, ...

... or paint stripper and 1,2-dichloroethane which is a dry cleaning fluid. Here is a sample reaction where a halogen replaces a hydrogen. CH4(g) + C12(g) ----> CH3Cl(g) + HCl(g) There are many uses for alkanes, for instance: Propane is used in gas grills, butane is used in cigarette lighters, through various reactions scientists can make paint stripper, anesthesia or dry cleaning fluid. The Pentanes and Hexanes are also highly flammable and make really cool explosions. Heptane, octane and nonane make up gasoline. The "Octane Scale" on gas pumps uses a system which rates n-heptane at a 0 and isooctane at 100. Currently propane gas is being studied to use it as a fuel for more ...

... they lived a magnificent life and their death is merely the start of a new beginning. After all the leaves have fallen, and the ground is littered in seas of immense color, the very structure that carried the leaves remains-the trees. They live on long after the leaves have fallen and died and remind us that no matter how long, cold, and terrible the winter is a new spring will come. Even though loved ones die and leave the earth behind the memory of them still remains planted firmly in the soul of the family. Eventually after the winter of pain and sorrow is over a new realization occurs that they have gone on to a better place and that they will see them again. Following the complete dis ...

... found the problem it was already very large. Detecting an acid lake is often quite difficult. A lake does not become acid over night. It happens over a period of many years, some times decades. The changes are usually to gradual for them to be noticed early. At the beginning of the 20th century most rivers/lakes like the river Tovdal in Norway had not yet begun to die. However by 1926 local inspectors were noticing that many of the lakes were beginning to show signs of death. Fish were found dead along the banks of many rivers. As the winters ice began to melt off more and more hundreds upon hundreds more dead fish (trout in particular) were being found. It was at this ti ...