- Dialogue Between Two Friends on Air Pollution in Delhi
- My Earth, My Responsibility | Voices of Youth
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Self study research proposal. Purpose of research proposal essay. Marijuana and creative writing. Homework asl signBiology form 5 chapter 3 essay. Social work curriculum vitae. Unfortunately, raising the height of a smokestack simply transfers pollution from one place to another. Technology exists that can drastically reduce the amount of particulate pollution and sulphur dioxide that enters the air when coal is burned.
The greatest beneficiaries of such a change will be the Chinese people, who are currently paying a high price in terms of coal-related damage to health, property, and the environment. But cleaner air in China will also benefit many who live far from China.
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Researchers recently found, for example, that smoke particles from China are reaching the United States. In addition to pollution-control devices, greater energy efficiency is just as important. State-of-the-art electricity generating plants burn less coal and release less particulate matter, sulphur dioxide, and carbon dioxide than traditional power stations. Energy conservation and more efficient appliances bring similar benefits—and cost less than new generating capacity.
If China invests in these technologies, both it and the rest of the world will reap enormous benefits. It is now clear that dilution is not the answer—the best way to deal with pollution is to prevent its creation in the first place. All of us on this planet are neighbours; and we have only one atmosphere to share among us.
Dialogue Between Two Friends on Air Pollution in Delhi
Just as people in earlier generations cooperated at the local and national levels to reduce pollution, we must work together globally to ensure healthy air now and in the future. Homepage photo by Robert Croma. Our readers are valued by us and now, for the first time, we are asking for your support to help maintain the rigorous, honest reporting and analysis on climate change that you value in a 'post-truth' era. Comments are translated into either Chinese or English after being moderated.
Maximum characters I definitely agree with the author's point of view. On the other hand, the image came into my mind of the sellers of coal bricks peddling through the old hutong of Beijing, selling their coal in winter. One excuse of the government's in destroying those streets, and that way of life, is that the old houses burn coal, but the new high-rises in the suburbs where people are moved will have cleaner energy.
Should these people and their ways of life be targeted like this?
These chemicals accumulate in the soil where they can undergo reactions with one another and form substances that are even more toxic . Two important things are worth noting about atmospheric deposition. First, it means no land on Earth—not even the most isolated island—can be considered completely safe from pollution: even if it's hundreds or thousand miles from the nearest factory or human settlement, even if no human has ever lived there, it could still be polluted from the air. Second, if you're doing something that causes pollution maybe spreading weedkiller on your garden or perhaps running a factory where ash is discharged from a smokestack , the effects are not necessarily going to be confined to the place where the pollution is first produced.
It's important to remember that pollution knows no boundaries. Photo: Soil erosion turns fields into deserts. If you define "land pollution" as irreversible damage to the land, you have to include soil erosion as a type of pollution too. Many people think soil is soil, always there, never changing, ever ready to grow whatever crops we choose to bury in it.
In reality, soil is a much more complex growing habitat that remains productive only when it is cared for and nurtured. Too much wind or water, destruction of soil structure by excessive plowing, excessive nutrients, overgrazing, and overproduction of crops erode soil, damaging its structure and drastically reducing its productivity until it's little more than dust.
My Earth, My Responsibility | Voices of Youth
At its worst, soil erosion becomes desertification : once-productive agricultural areas become barren, useless deserts. How serious is the problem? In , former UN Secretary General Kofi Annan warned the world that: "Drought and desertification threaten the livelihood of over 1 billion people in more than countries around the world. Deforestation doesn't only harm the place where the trees are cut down. A study by Princeton University researchers found that if the Amazon rainforest were completely destroyed, it would have a dramatic effect on the atmosphere, which would carry across to places like the United States, causing drought and potentially desertification there as well .
Unfortunately, because soil erosion has so far affected developing countries more than the developed world, it's a problem that receives relatively little attention. Accelerating climate change will soon alter that. In a future of hotter weather and more intense storms, it will become increasingly difficult to maintain soil in a fertile and productive state, while heavy rainstorms and flash floods will wash away topsoil more readily. Meanwhile, agriculture may become impossible in coastal areas inundated by saltwater carried in by rising sea levels. We might think of global warming as an example of air pollution because it's caused mostly by humans releasing gases such as carbon dioxide into the atmosphere.
But if it leads to dramatic sea-level rise and coastal erosion, you could argue that it will become an example of land pollution as well. With luck and the right atmospheric conditions, air and water pollution disperse and disappear. What makes land pollution such a problem is that land is static, so land pollution stays exactly where it is until and unless someone cleans it up.
Land that's polluted stays polluted; land that's urbanized almost invariably stays urbanized.
As we've already see, plastics take hundreds of years to disappear while radiation can contaminate land for ten times longer. That means landfill sites and radioactive waste dumps remain that way pretty much indefinitely.
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The simplest effect of land pollution is that it takes land out of circulation. The more land we use up, the less we have remaining. That might not sound a problem where there's plenty of land in rural areas, but it's certainly a concern where productive agricultural land is concerned, especially as the world's population continues to increase.
The biggest problem comes when contaminated land is returned to use, either as building or agricultural land. Houses might be built on brownfield former industrial sites that haven't been cleaned up properly, putting future owners and their families at risk. Or people might get their water from rivers supplied by groundwater contaminated by landfill sites, mine workings, or otherwise polluted land some distance away. Illnesses such as cancer develop over years or decades for a variety of reasons and it's extremely difficult to prove that they've been caused by something like local environmental pollution, especially when people move homes during their lifetime.
No-one knows how much land is contaminated, how contamination varies from one place to another, or how land contaminants react with one another once they enter watercourses and become water pollution. So the scale of the problem and its ultimate effects are impossible to determine. However, we do know what effect individual pollutants have.
We know, for example, that lead is a toxic heavy metal that has all kinds of unpleasant effects on human health; it's been implicated in developmental deficits such as reductions in intelligence in children . We know that some chemicals are carcinogenic cancer-causing  while others cause congenital defects such as heart disease . At the very least, it seems prudent not to introduce dangerous chemicals, such as persistent organic pollutants, into the environment where they may mat harm people's health for many years into the future.
Why does land pollution matter? Although Earth might seem a pretty big place, only about a third of its surface is covered in land, and there are now over seven billion people trying to survive here.