… elements on the Earth. It makes up approximately 5 percent of the Earth's crust. Much of this iron is found in such small concentrations in other rocks, however, that it cannot be used economically for mining. The chemical element iron is…

… the heat of the summer is not enough to melt all the snow that falls in winter. Whenever this occurs year after year, there is a gradual accumulation of snow in the upper ends of mountain valleys. These areas where the snow lasts from year to year are…

… Mississippi River, is one of the longest in the world. According to the United States Army Corps of Engineers, if it is measured from the Upper Red Rock Reservoir which leads to its longest branch, the Missouri the Mississippi flows 3,658 miles to the…

… a year, 2 million permanent injuries, and 40,000 deaths in the United States each year according to The Department of Transportation's 2002 statistics. 30% of these accidents are due to the failure of individuals to obey speed restrictions.…

… has become our major source of mass transportation. Everything about our culture and society has developed around this necessary form of travel. However, along with this necessity comes the issue of pollution to the environment. These great gasoline…

… of polar ozone depletion (commonly called the ozone hole) gets larger, additional ultraviolet rays are allowed to pass through. These rays cause cancer, cataracts, and lowered immunity to diseases.1 What causes the depletion of the ozone layer? In…

… is an independent island nation in the southern Pacific Ocean, located approximately 1,900 miles northeast of Sydney, Australia, and approximately 3,100 miles southwest of Honolulu, Hawaii at 16-20˚ S latitude and 178˚E - 178˚W…

… SBS) The documentary Muddy Waters provides an insight into the sedimentation on the Great Barrier Reef between Cairns and Townsville and how it is destroying the reef. However, though the movie does try to portray opposing sides of the debate as…

… breathable air for centuries. Sources such as volcanic ash, salt released from oceanic waves crashing, smoke from forest fires and windblown dirt particles all contribute to natural air pollution. Humans and their ability to manipulate these natural…

… and cultivating their physical, financial, and human capital. The environment and the ecosystem, on the other hand, are just beginning to receive attention. Over the last three decades, there has been a growing recognition that pollution poses a serious…