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Post Info TOPIC: Negative Perspective on Pollution


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Negative Perspective on Pollution


1.Energy that is used for transportation with the exception of electronic vehicles (EVs) creates pollution.
2.Use of some alternative energy resources rather than fossil fuels and other nonrenewable resources results in less atmospheric smog and global pollution.
3. Much of the silicon crystal is wasted because it can not be used solar electricity.
4.Nuclear power has in recent years come under fire from environmentalists and other groups that worry about the safety of the earth with the existence of nuclear power plants.
5.As the nuclear reaction builds within a nuclear reactor facility, the temperature also increases.
6.This process has become a major problem, especially if the temperature can not be controlled.
7.When the temperature becomes too high, a nuclear meltdown occurs, and the contents of the nuclear reaction leave through the top of the silo.
8.Radioactive gases drift by the winds to not only local, but also distant places to cause significant damage.
9.Nuclear power meltdowns release radioactive isotopes that are harmful to all forms of life.
10.All cancer forms because of the mutation in a cell, and radioactive isotopes are the reason for a great number of cancers.
11.Hydroelectric power is considered a low - pollution alternative energy form, but may cause other environmental problems.
12.hydroelectric dams may be classified as a polluting alternative energy source.
13.When a dam is constructed, the natural water flow of a river is obstructed, and the animal life that exists in a river ecosystem is consequentially interrupted.
14.For example, animals higher up the food chain than fish, that feed on fish may lose their primary source of food and die.
15.The change in the river ecosystem brought through a hydroelectric dam could also result in fish reduction and an increase in the insect or crustacean population because these critters would not be naturally controlled.
16.Wind power is another alternative energy source that does not create conventional pollution, but may wreak havoc on the inhabitants of the area around the site of the power plant.
17.Large wind turbines that have long blades, or the egg - beater type varieties are extremely dangerous to birds.
18.Wind turbines are usually placed in areas that the greatest wind is available.
19. Unfortunately, but logically, the same places that great winds exist are also centers of bird migration and nesting.
20.Large wind power farms appear as a visual threat to humans.
21.The ugliness of a great wind farm could reduce tourism or home purchases in areas that utilize wind power.
22.liquid coal, often touted as an alternative to gasoline and thus a way of reducing our dependence on foreign oil, can actual produce up to 80% more global warming pollution than typical unleaded gasoline.
23.The process of turning coal into liquid actually produces nearly double the level of carbon dioxide emissions that conventional gasoline does.
24.Other popular alternative fuels, such as corn ethanol, can also be more polluting.
25. A recent US study released on , warns that some alternative fuels can cause more harmful greenhouse gas emissions than fossil fuel polluters like diesel or petrol.

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-- Edited by fahimmulti at 02:04, 2008-09-28

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The second part to the Other 25 Facts

1.Biofuel production has clearly raised prices of corn,with an overall implication for food security.
2.This is debatable because the extent or contribution to which biofuels have increased prices of corn may be overshadowed by the increase in the costs of all fuels--by increasing planting, harvesting, and transit costs of low energy density (and bulky) crops.
3.Biofuels are also seen as having limitations.
4.He feedstocks for biofuel production must be replaced rapidly and biofuel production processes must be designed and implemented so as to supply the maximum amount of fuel at the cheapest cost, while providing maximum environmental benefits.
5.Broadly speaking, first generation biofuel production processes cannot supply us with more than a few percent of our energy requirements sustainably.
6.Second generation processes can supply us with more biofuel, with better environmental gains.
7.The major barrier to the development of second generation biofuel processes is their capital cost: establishing second generation biodiesel plants has been estimated at 500million.
8.Biomass is a renewable fuel, its use can still contribute to global warming.
9.When biomass is used as a fuel, as a replacement for fossil fuels, it still puts the same amount of CO2 into the atmosphere.
10.The production of biomass trough the cultivation of corn, colza, or sugar beets has considerable higher energy costs that that of wood.
11.There are several environmental concerns behind geothermal energy.
12. Construction of the power plants can adversely affect land stability in the surrounding region.
13.Hot water from geothermal sources will contain trace amounts of dangerous elements such as mercury, arsenic, antimony, etc. which if disposed of into rivers can render their water unsafe to drink.
14.Although geothermal sites are capable of providing heat for many decades, eventually specific locations may cool down.
15.Hydroelectric projects can be disruptive to surrounding aquatic ecosystems both upstream and downstream of the plant site.
16.Salmon spawn are also harmed on their migration to sea when they must pass through turbines.
17.Generation of hydroelectric power changes the downstream river environment.
18.Water exiting a turbine usually contains very little suspended sediment, which can lead to scouring of river beds and loss of riverbanks.
19.Dissolved oxygen content of the water may change from pre-construction conditions.
20.Depending on the location, water exiting from turbines is typically much warmer than the pre-dam water, which can change aquatic faunal populations, including endangered species, and prevent natural freezing processes from occurring.
21.Many native and migratory birds such as the Piping Plover and Sandhill Crane have become increasingly endangered
22.The reservoirs of power plants in tropical regions may produce substantial amounts of methane and carbon dioxide
23.Another disadvantage of hydroelectric dams is the need to relocate the people living where the reservoirs are planned.
24.No amount of compensation can replace ancestral and cultural attachments to places that have spiritual value to the displaced population.
25. Additionally, historically and culturally important sites can be flooded and lost.

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