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Alex Kuzma

krakatoa - 0 views

www.donttelleveryone.com/...krakatoa.html

shared by Alex Kuzma on 16 Dec 08 - Cached
  • Alex Kuzma on 16 Dec 08
     
    Until the night of August 26-27, 1883, Krakatau had an area of 47 sq km (18 sq mi); at that time, a volcanic eruption and its consequent explosions destroyed most of the island, so the present area is only 15 sq km (6 sq mi)
anonymous

The dope on steroids: Why some athletes take the risk : UMNews : University of Minnesota - 0 views

www1.umn.edu/...me_athletes_take_the_risk.html

shared by anonymous on 03 Dec 08 - Cached
  • The stakes in Athens are fierce. The difference between an Olympic gold or silver medal could be a one hundredth of a second on the track or in the pool; an inch on the pole vault or shot put.
  • The athletes who make the Olympic cut are blessed with the right combination of physical and psychological traits, including an intense competitive drive and an unrelenting determination to be the best. This is the stuff of champions.
  • Steroids are not just for elite athletes--they can be used by anyone who wants to change his or her body image. The Centers for Disease Control's Youth Risk Behavior Surveillance report shows more than a million youth taking steroids, and the numbers have been rising every year.
  • ...13 more annotations...
  • Unfortunately, sometimes so are steroids. For decades, athletes have used anabolic (meaning muscle-building) steroids and other performance-enhancing drugs to build strength and endurance. And those drugs are getting more and more sophisticated in an effort to evade detection. Doping, as the practice is called, is illegal and, by most people's standards, unethical. Athletes who have been caught using these drugs have been stripped of their Olympic medals and world records and banned from their sports, sometimes for years, and on occasions for a lifetime.
  • "There are rights and wrongs in life, and if it's against the rules, it's cheating to do it," says Wiese-Bjornstal. "I love sports, but some athletes treat elite sports as if they are life itself, more important than their health, their loved ones, and even their lives."
  • In addition, steroids mess with your body. Potential side effects include high blood pressure, strokes, nausea, sleep problems, increased aggressiveness, and severe mood swings. In men, steroids can reduce sperm count and cause impotence, breast growth, and shrunken testicles. In women, side effects can include reduced breast size, increased body and facial hair, a deepened voice, and menstrual problems.
  • With the risks and consequences of steroid use so high, why do some athletes continue to dope?
  • "The major underlying factor [with steroids use] is that winning at all costs is the most important thing," says Diane Wiese-Bjornstal, associate professor in the School of Kinesiology.
  • She says that athletes that use steroids often have the mindset that "they are demonstrating that they are as highly committed to their sport as they can be and are doing whatever it takes to prove to themselves, their coaches, and to the world that they are true athletes who will do anything to win."
    • anonymous
      anonymous on 03 Dec 08
       
      Diane Wiese-Bjornstal's Comment
  • From a moral and ethical framework, Wiese-Bjornstal believes this is twisted thinking. "There are rights and wrongs in life, and if it's against the rules, it's cheating to do it," she says. "I love sports, but some athletes treat elite sports as if they are life itself, more important than their health, their loved ones, and even their lives."
    • anonymous
      anonymous on 03 Dec 08
       
      Wiese-Bjornstal's Comment
  • She also says there is pressure to dope because of the belief that everyone else is doing it, and that if an athlete wants to compete at the highest level, she or he has to do it, too.
  • Nancy Cullen, a sports psychology consultant for the University, says the temptation to use steroids and other performance-enhancing drugs simply comes down to the rigors and pressure of elite competition and the desire to win. She cites an alarming poll taken in 1995 of 198 sprinters, swimmers, power lifters and others, most of whom were Olympians or aspiring Olympians. The poll asked if the athletes would take a banned performance-enhancing substance if they knew if would help them win and they wouldn't be caught--195 responded, yes.
  • Most athletes train for perfection," says Cullen. "The drive to achieve and win is so strong. If the difference between winning or losing is a hundredth of a second, and there is a drug that might give you the edge, the temptation can be great."
  • For some Olympic events, steroid scandals have cast a pall over the games, leaving viewers to wonder after each win, "Did he take drugs? Did she?"
  • Both Wiese-Bjornstal and Cullen agree that education, beginning with young athletes, is important in the fight against steroid use, as are drug testing and stiffer penalties for those who are caught. They also believe that coaches and parents play an important role in supporting the healthy ambitions of developing athletes.
  • "It's important to teach athletes to know what the consequences are and to learn other training practices that are legal and don't involve taking drugs," says Cullen. "Strive to win, strive for perfection, but do it within the rules of the game."
  • anonymous on 03 Dec 08
     
    Good Site for information and Comments on use of drugs on athletes. Site has lots of good comments. Very Interesting.
  • anonymous on 03 Dec 08
     
    Use it
Stephania D

Oil Remains - 0 views

www.afsc.noaa.gov/...feature_jas01.htm

Exxon Valdez Pollution water

shared by Stephania D on 03 Dec 08 - Cached
  • largest and most productive estuaries in North America.  
  • However, in 1993 the EVOS Trustee Council funded an additional survey that estimated 7 km of shoreline were still contaminated with subsurface oil.
  • Because a significant survey of Prince William Sound had not been conducted since 1993 and the cumulative extent of the remaining oil was unknown, concerns were generated by the public and scientific communities about the oil’s possible continuing effects on humans and fauna potentially exposed to the oil directly or indirectly.
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  • Without an accurate assessment of the extent of the remaining oil, subsistence food-gatherers, consumers of commercial fish products from the area, and tourists have used mostly anecdotal evidence as the basis for economic decisions regarding resource utilization in the affected area.
  • Consequently, the Auke Bay Laboratory (ABL) with funding from the EVOS Trustee Council, took on the task of assessing the remaining oil along the shorelines of Prince William Sound during the summer of 2001
  • The primary objective of the project was to measure the amount of oil remaining in the intertidal zone of Prince William Sound.  Secondary objectives include determining the rate of decline of oil on these beaches, estimating the persistence of the remaining oil, and correlating the remaining oil with geomorphological features.
  • heavily and moderately oiled
  • The 2001 survey adopted a stratified random/adaptive sampling (SRAS) design. Two random pits were excavated to a depth of 0.5 m (1.6 feet) in every stratified block (0.5-m verticle drop in tide height) within a grid system established at each site. If subsurface oil was discovered in any of the randomly stratified origin pits, then additional adaptive pits were excavated above, below, to the right, and to the left of the origin pit until the extent of the oil patch was determined.
  • Buried or subsurface oil is of greater concern than surface oil.
  • Subsurface oil can remain dormant for many years before being dispersed and is more liquid, still toxic, and may become biologically available.
  • A disturbance event such as burrowing animals or a severe storm reworks the beach and can reintroduce unweathered oil into the water.
  • The toxic components of this type of surface oil are not as readily available to biota, although some softer forms do cause sheens in tide pools.
  • 1) Surface oil was determined to be not a good indicator of subsurface oil. 2) Twenty subsurface pits were classified as heavily oiled.  Oil saturated all of the interstitial spaces and was extremely repugnant. These “worst case” pits exhibited an oil mixture that resembled oil encountered in 1989 a few weeks after the spill - highly odiferous, lightly weathered, and very fluid. 3) Subsurface oil was also found at a lower tide height than expected (between 0 and 6 feet), in contrast to the surface oil, which was found mostly at the highest levels of the beach (Table 3).  This is significant, because the pits with the most oil were found low in the intertidal zone, closest to the zone of biological production, and indicate that our estimates are conservative at best.
  • The possibility of continuing low level chronic effects of the Exxon Valdez oil spill seem very real now, although measurable population effects would be very difficult to detect in wild populations.
  •  Sea otters and harlequin ducks fall into this category
  • such as sea otters, harlequin ducks, and their intertidal prey.
  • The last beach assessment was completed in September 2001. Supporting chemical analyses will be completed in fall 2002, and a final report with statistical analyses and conclusions will be completed by April 2002.
  • Stephania D on 03 Dec 08
     
    Exxon Valdez
Stephania D

Water Pollution - 0 views

www.umich.edu/...waterpollution.htm

Water Pollution info.

shared by Stephania D on 03 Dec 08 - Cached
  • According to the American College Dictionary, pollution is defined as:  �to make foul or unclean; dirty.
  • When it is unfit for its intended use, water is considered polluted.
  • Point sources of pollution occur when harmful substances are emitted directly into a body of water.
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  • A nonpoint source delivers pollutants indirectly through environmental changes.
  • Nonpoint sources are much more difficult to control.
  • Pollution arising from nonpoint sources accounts for a majority of the contaminants in streams and lakes.  
  • Many causes of pollution including sewage and fertilizers contain nutrients such as nitrates and phosphates.  In excess levels, nutrients over stimulate the growth of aquatic plants and algae.  Excessive growth of these types of organisms consequently clogs our waterways, use up dissolved oxygen as they decompose, and block light to deeper waters.
  • Pollution in the form of organic material enters waterways in many different forms as sewage, as leaves and grass clippings, or as runoff from livestock feedlots and pastures.
  •     Pathogens are another type of pollution that prove very harmful.
  • Three last forms of water pollution exist in the forms of petroleum, radioactive substances, and heat.
  •      Ninety-five percent of all fresh water on earth is ground water
  • Ground water is found in natural rock formations.
  • These formations, called aquifers, are a vital natural resource with many uses.  Nationally, 53% of the population relies on ground water as a source of drinking water.  In rural areas this figure is even higher.  Eighty one percent of community water is dependent on ground water.  Although the 1992 Section 305(b) State Water Quality Reports indicate that, overall, the Nation�s ground water quality is good to excellent, many local areas have experienced significant ground water contamination. Some examples are leaking underground storage tanks and municipal landfills.
  • Stephania D on 03 Dec 08
     
    Full description of water pollution, etc.
Krisly Philip

Thoughts on Global Warming: Top 5 Worst Effects of Global Warming - 0 views

thoughtsonglobalwarming.blogspot.com/...effects-of-global-warming.html

worst consequences global warming top 5

shared by Krisly Philip on 02 Dec 08 - Cached
  • 1. Polar ice caps meltingThe ice caps melting is a four-pronged danger.First, it will raise sea levels. There is 5,773,000 cubic miles of water in ice caps, glaciers, and permanent snow. According to the National Snow and Ice Data Center, if all glaciers melted today the seas would rise about 230 feet. Luckily, that’s not going to happen. But sea levels will rise.Second, melting ice caps will screw up the global ecosystem. The ice caps are fresh water, and when they melt into the ocean, they make it less salty, or desalinize the ocean. The desalinization of the gulf current will screw up, to put it simply, the current. It will cool the area around north-east America and Western Europe. Luckily, that will slow some of the other effects of global warming in that area. But with the stream shutdown, the whole Atlantic ecosystem could be warped.Third, all the animals in the Arctic will be in danger because of a changing habitat.Fourth, global warming will accelerate with the ice caps gone. Ice caps are white, and reflect sunlight. Some of that sunlight is reflected back into space, further cooling Earth. If the ice caps are melted, only the dark-colored ocean will be there. Darker colors absorb sunlight, further warming the Earth.
Katie M

Global Warming Effects, Global Warming Causes, Causes of Global Warming, Effects of Global Warming - 0 views

globalwarming-awareness2007-arshad.com

shared by Katie M on 08 Dec 08 - Cached
  • Many scientists have specified various reasons for global warming effects on the environment and for human life. It is not easy to point one reason for global warming effects, but recently you might have saw many change in global climate. Global warming effects have various consequences such as glacier volume decreasing, rise in sea levels, shrinkage of Arctic and altered fashion of doing agriculture have been named as direct effects on global warming. Secondary global warming effects are extreme weather events, increase in tropical diseases, changes in the timing of seasonal patterns in ecosystems, and drastic economic impact.
  • Before many times back, many scientist and researchers were hopping that a positive effect of global warming would be increased agricultural yields(outputs), because of the role of carbon dioxide in photosynthesis which might behave in positive manner, but now it resulting in destructions of several crops. In the area of Iceland, due the rising temperatures which have made possible the widespread sowing of barley easily in an effective manner, which was not possible twenty years from now. The net result is expected to be that 33% less maize—the country's staple crop—will be grown. The reduction in rainfall has turned millions of land into deserts.
  • Insurance industry has been affected very badly with the risk of insurance; the number of major natural disasters has been increased to 300% since 1960s, and insured losses increased fifteenfold in real terms. According to Choi and Fisher (2003) each 1% increase in annual precipitation could enlarge catastrophe loss by as much as 2.8%.
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  • All major Transportation sources such as Roads, airport runways, railway lines and pipelines, always require time to time maintenance and renewal as they become subject to greater temperature variation. Regions already adversely affected include areas of permafrost, which are subject to high levels of subsidence, resulting in buckling roads, sunken foundations, severely cracked runways and many other related problems.
  • Most of the low-lying countries such as Bangladesh, Indonesia, Netherlands and many other small islands have been affected by sea level rise, in terms of floods or the cost of preventing them. In most of the poorest low-plain countries, land is the only available space, or fertile agricultural land which is livelihood for them. But due to flood they are finding problem now to perform their activities.
  • Katie M on 08 Dec 08
     
    effects of global warming
Patrick Wan

History of break dancing - 0 views

www.essortment.com/...wherefindcanh_riym.htm

History

shared by Patrick Wan on 08 Dec 08 - Cached
  • The term "breakdancing" refers to the breaks in music
  • The dance must be done in sneakers, for the dancer's safety. Breakdancing is known as an especially dangerous sport for several reasons. It is not unusual for a dancer to get something caught, stubbed or stopped while moving in air. This dance is never done on a soft surface. It emphasizes the rough, raw urban feel of fighting. As a consequence, several dancers have broken their necks, and one died notably in 1982, due to a breakdancing move gone wrong.
    • Patrick Wan
      Patrick Wan on 08 Dec 08
       
      OMG lolol guy died from messing up
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