Oil. It's a nonrenewable resource, but only in the last decade or so has the "non" part really begun to hit home. As oil prices continue their seemingly endless trek skyward, the whispers about peak oil have turned into a roar. Peak oil is the hypothetical date when the combined daily output of global oil producers has reached its maximum and then begins to decline. Essentially, this is the point where supply starts to move downward, while demand continues to climb. You don't need to be an economics major to figure out what the effect on prices will be.
The World Health Organization reports that in some areas of the world, as much as 80% of all transmittable diseases are spread by consumption of contaminated drinking water. A staggering figure that is directly, or indirectly, the largest single human mortality factor. Nor is this situation isolated to one geographic area. It has been estimated that one quarter of the earth's population, that is more than a billion-and-a-half people, still do not have enough clean, safe drinking water for their daily needs
Forests have many resources that people can use to raise their living standards. One example is the wood for building houses. Certain wood materials last a long time, they keep the house warm and make it easy to manufacture homes. Unfortunately the world is overpopulating and the demand for a higher standard of living is constantly on the rise. Therefore the demand for more resources is growing to levels that cannot be sustained. Since forests provide a large portion of the world's resources, many forests are cut down or burned. The cause for cutting down forests is directly associated with the high demand for wood to manufacture paper products and lumber for other manufacturing. We practically use wood for everything. It is used in home building, marine products, furniture and the list seems like it's endless. Just look around yourself right now and chances are you will find a product within your reach that is made of wood. Not only is wood a good building material, but it also has great aesthetic qualities. Most people appreciate a nice wooden dining table set or classic wooden rails on a staircase. Unfortunately we don't always take in to account how many trees need to be cut down so we can have these luxuries in our lives.
Ozone depletion describes two distinct but related phenomena observed since the late 1970s: a steady decline of about 4% per decade in the total volume of ozone in Earth's stratosphere (the ozone layer), and a much larger springtime decrease in stratospheric ozone over Earth's polar regions. The latter phenomenon is referred to as the ozone hole. In addition to these well-known stratospheric phenomena, there are also springtime polar tropospheric ozone depletion events.
Pollution likely affects over a billion people around the world, with millions poisoned and killed each year. The World Heath Organization estimates that 25 percent of all deaths in the developing world are directly attributable to environmental factor.1 Some researchers estimate that exposure to pollution causes 40 percent of deaths annually.People affected by pollution problems are much more susceptible to contracting other diseases. Others have impaired neurological development, damaged immune systems, and long-term health problems