Your Ad Here Your Ad Here

Sunday, July 12, 2009

Types of Pollutions

Pollution
Pollution is the introduction of substances or energy into the environment, resulting in deleterious effects of such a nature as to endanger human health, harm living resources and ecosystems, and impair or interfere with amenities and other legitimate uses of the environment.[1] The major forms of pollution include:

* Air pollution, the release of chemicals and particulates into the atmosphere. Common examples include carbon monoxide, sulfur dioxide, chlorofluorocarbons (CFCs), and nitrogen oxides produced by industry and motor vehicles. Photochemical ozone and smog are created as nitrogen oxides and hydrocarbons react to sunlight.
* Water pollution via surface runoff and leaching to groundwater.
* Soil contamination occurs when chemicals are released by spill or underground storage tank leakage. Among the most significant soil contaminants are hydrocarbons, heavy metals, MTBE[2], herbicides, pesticides and chlorinated hydrocarbons.
* Radioactive contamination, added in the wake of 20th-century discoveries in atomic physics. (See alpha emitters and actinides in the environment.)
* Noise pollution, which encompasses roadway noise, aircraft noise, industrial noise as well as high-intensity sonar.
* Light pollution, includes light trespass, over-illumination and astronomical interference.
* Visual pollution, which can refer to the presence of overhead power lines, motorway billboards, scarred landforms (as from strip mining), open storage of trash or municipal solid waste.
* Thermal Pollution, is a temperature change in natural water bodies caused by human influence.

Sources and causes
pollution Motor vehicle emissions are one of the leading causes of air pollution.[3][4][5] China, United States, Russia, Mexico, and Japan are the world leaders in air pollution emissions; however, Canada is the number two country, ranked per capita. Principal stationary pollution sources include chemical plants, coal-fired power plants, oil refineries,[6] petrochemical plants, nuclear waste disposal activity, incinerators, large livestock farms (dairy cows, pigs, poultry, etc.), PVC factories, metals production factories, plastics factories, and other heavy industry. Some of the more common soil contaminants are chlorinated hydrocarbons (CFH), heavy metals (such as chromium, cadmium--found in rechargeable batteries, and lead--found in lead paint, aviation fuel and still in some countries, gasoline), MTBE, zinc, arsenic and benzene. Ordinary municipal landfills are the source of many chemical substances entering the soil environment (and often groundwater), emanating from the wide variety of refuse accepted, especially substances illegally discarded there, or from pre-1970 landfills that may have been subject to little control in the U.S. or EU. Pollution can also be the consequence of a natural disaster. For example, hurricanes often involve water contamination from sewage, and petrochemical spills from ruptured boats or automobiles. Larger scale and environmental damage is not uncommon when coastal oil rigs or refineries are involved. Some sources of pollution, such as nuclear power plants or oil tankers, can produce widespread and potentially hazardous releases when accidents occur. In the case of noise pollution the dominant source class is the motor vehicle, producing about ninety percent of all unwanted noise worldwide.
Effects on human health

Adverse air quality can kill many organisms including humans. Ozone pollution can cause respiratory disease, cardiovascular disease, throat inflammation, chest pain, and congestion. Water pollution causes approximately 14,000 deaths per day, mostly due to contamination of drinking water by untreated sewage in developing countries. Oil spills can cause skin irritations and rashes. Noise pollution induces hearing loss, high blood pressure, stress, and sleep disturbance.

Effect on ecosystems
* Sulfur dioxide and oxides of nitrogen can cause acid rain which reduces the pH value of soil.
* Soil can become infertile and unsuitable for plants. This will affect other organisms in the food web.
* Smog and haze can reduce the amount of sunlight received by plants to carry out photosynthesis.
* Invasive species can out compete native species and reduce biodiversity. Invasive plants can contribute debris and biomolecules (allelopathy) that can alter soil and chemical compositions of an environment, often reducing native species competitiveness.

Regulation and monitoring
To protect the environment from the adverse effects of pollution, many nations worldwide have enacted legislation to regulate various types of pollution as well as to mitigate the adverse effects of pollution.

Historical and projected CO2 emissions by country. Source: Energy Information Administration.

This information was brought to you by www.wikipedia.com

Thursday, July 9, 2009

Michael Jackson’s final resting place a mystery

Forest Lawn, Neverland Ranch, and cremation are all possibilities
Michael Jackson's glimmering casket took center stage at the Staples Center as celebrities memorialized the King of Pop under the watchful eyes of millions. And when the ceremony was over, it was gone.
LOS ANGELES - Michael Jackson's glimmering casket took center stage at the Staples Center, sitting for more than two hours as celebrities memorialized the King of Pop under the watchful eyes of millions. And when the ceremony was over, it was gone.
By law, the golden casket that presumably held Jackson's body should be exactly where his death certificate says it is: back at Forest Lawn Memorial Park Hollywood Hills cemetery, the site of a private family memorial service held before the Staples ceremony. Los Angeles County records show the cemetery as the temporary location, where it must stay until those records are officially updated.

But where Jackson's body will eventually be laid to rest remained a mystery, fed by the same level of rumor and speculation that surrounded much of his life. Will he be interred at Forest Lawn? Is Neverland Ranch still a possibility?
What if he's not buried at all, but cremated? The family isn't talking — and may not even have decided yet.
The casket was first seen leaving the mortuary at Forest Lawn, where it got into a hearse for the 10-mile trip to the Staples Center. But before the service even started, the hearse was seen leaving the facility — empty — and wasn't spotted again.
But to keep in good standing with the law, the casket would have needed to return to Forest Lawn at some point, presumably after the crowds went home and the television cameras were long gone.

Robert J. Biggins, a former president of the National Funeral Directors Association, said Jackson's body is likely in his casket which he identified it as a custom-made, top-of-the-line coffin made by the Indiana-based Batesville Casket Company that is called a "Promethean." The casket is probably in a temporary holding area — perhaps a mausoleum — pending a final location, he said.

"This happened so quickly that it's something that has to have an awful lot of thoughtful consideration," said Biggins, who is the owner of Magoun-Biggins Funeral home in Rockland, Mass. "This is bigger than your average burial."

Family appears dividedConjecture about Jackson's final resting place has been as fraught as the rumors about where his memorial service would be held in the days before the Staples Center was announced. His 5-page will, signed in 2002, does not include final wishes for his body.
Forest Lawn is one likely possibility. If Jackson is buried there, he would join other celebrities such as Liberace, Gene Autry, Bette Davis and Andy Gibb. Recently deceased actor David Carradine and "Tonight Show" sidekick Ed McMahon also are buried there.

The Jackson family seems divided over whether the body should go to Neverland, which would surely turn the Santa Barbara County ranch into a West-coast Graceland. But Jackson abandoned the 2,500-acre estate after going into seclusion following his acquittal on child molestation charges in 2005, and many of the things that made it unique — the merry-go-round, Ferris wheel and zoo — are gone.
getCSS("3053751")
Slideshow

Saying goodbye to the ‘King of Pop’The family holds a private service, and fans and celebrity friends say farewell to the pop star at a public memorial service at Staples Center in Los Angeles.
more photosBillionaire Thomas Barrack, who owns Neverland in a joint venture with Jackson, has expressed an openness to the idea of having the singer's body buried at the ranch. The family would need to get permission from local land-use officials to bury Jackson on private property, then submit an application and paperwork with the state Cemetery and Funeral Bureau.

The state application would then need to be approved by the funeral board, a process that could take anywhere from seven to 30 days.
Beyond that, accessibility remains an issue at Neverland. A single two-lane highway leads to the property about 130 miles north of Los Angeles, and infrastructure changes would likely be necessary to accommodate the additional traffic.
Another possibility is cremation. State law requires that the person who has control of the cremated remains obtain written permission of the property owner or governing agency to scatter on the property.

Delay allows burial to be ‘done right’Funeral experts said the delay in Jackson's funeral may be due to the fact that such celebrity deaths create logistical, security and legal headaches.
"One of the issues you're going to run into with any high-profile name, whether it be a former president of the United States or somebody of Michael Jackson's stature, is what does the cemetery — if it's to be a burial — do to establish security, to protect the remains, to protect the privacy of the family during the service, to protect remains afterward and what kind of built-in overhead comes with it," said Paul Elvig, former president of the International Cemetery, Cremation and Funeral Association.
Experts said even a two-week delay between death and funeral is not unusual. The body of singer James Brown was kept in a sealed gold casket inside his South Carolina home for more than two months before being interred in 2007 at the home of one of his daughters.
"You're probably talking more about an impatient public and an impatient press wanting to know what's going to happen and that impatience needs to be understood," Elvig said. "If a body's been properly prepared by an embalmer, it can be held for a considerable period of time with minor touchups to it."
Biggins said he is even encouraged by the delay.

"I think the fact that there's this pause is a wonderful thing because it's being given thoughtful consideration," he said, "to make sure this is done right and this is done in a way that honors his legacy."
Your Ad Here