Pollution

1. Because people don't know what will happen in the future. There is a lot of speculation about it, but the science is not at all "settled", despite what Al Gore says.

2. Because, even if global warming really is happening, it is not proven that mankind is causing it, and if mankind isn't causing it, we can't stop it either.

3. Because, even if global warming really is happening, and even if mankind is causing it, and even if mankind can stop it, it is not at all certain that the results will be "bad". In fact, the last three times global warming occurred (which, by the way, were long before the invention of the automobile, or anything else humans could have use to pump massive quantities of CO2 into the atmosphere), mankind prospered greatly due to the warmer temperatures. Higher birth rates; lower death rates; less disease and sickness; more abundant plants and animals; higher crop yields; more arable land. Even wars were less common, because the scarce resources that people and nations tend to fight over were more plentiful.

4. Because, even if the results of global warming were unquestionably bad, they are nowhere near as bad as what will happen if we make any serious attempt to stop global warming. Stopping global warming will require a complete ban on the burning of fossil fuels, which will cause a complete collapse of the world's economy. And of course, food supplies will plummet, causing widespread starvation. Compare that to 1-2 degrees warmer weather, or 1-2 feet higher sea levels.

But what one person, on the whole planet, is most widely recognized as supporting the anthropogenic global warming theory? Al Gore owns a mansion in Tennessee that burns more electricity and natural gas in a single month than the average US home burns in an entire year. He also owns a fleet of automobiles, and I guarantee you not one of them is a Prius. Oh, and lets not forget his private jet, which he flies all around the world telling all of us that we need to reduce our carbon footprints. And he hangs out with all his Hollywood buddies, who own mansions and private jets and limousines, and they all complain about how all us little people are destroying the planet. The hypocrisy boggles the mind. I don't believe it for a minute, so that's why I keep doing those things that Al Gore thinks will harm the environment. But why does Al Gore keep doing them?

Machinery breakdowns are always costly. But they are especially costly during planting and harvest, when getting seed in the ground and grain out of the field in a timely fashion are critical to maximizing yield.

According to Dr. Mark Hanna, Extension ag engineer at Iowa State University, a day of downtime during planting this spring can cost around $1,400, assuming 12-row equipment and an eight-hour day. A day of downtime at harvest might cost around $500. "Both figures depend on the penalty of the weather during the individual season - that is, how much yield is reduced by planting or harvesting on the last day of the season versus the day in which the equipment was down," Hanna explains.

Luke Gierach, salesman for AC McCartney Equipment in Wataga, IL, answers operating-related questions on more than 200 early-model tractors, combines and related equipment each year. We asked him to name the most common problems he sees on machinery that can lead to breakdowns in the field. Here's his Top 10 list along with tips on how you can prevent these problems from happening in the first place.

1. Not reading the operator's manual

   "I don't know how many times I say, 'It's in the operator's manual,'" Gierach says. Reading the operator's manual is important, he says, because it tells you how to set the machine and what parts to check before you take it to the field. However, it is one step that many owners fail to do thoroughly.

   "For example, the owner's manual will tell them how to calibrate and set seed depth on a corn planter or air pressure if it is an air planter for proper seed placement," Gierach explains. "Once farmers start planting they might see skips or doubles in the seeds planted. So they call and wait for us to give them an answer when it was right in the operator's manual."

   The operator's manual also describes how to fix certain problems once they happen so that owners can troubleshoot the problem themselves without having to take more time to wait for a technician. However, many farmers may forget to check the troubleshooting section, which can cost them even more time out of the field.

2. Improper maintenance

   Gierach says it is important to grease a machine properly and on a timely basis. "Sometimes farmers or their employees will miss some grease or lube locations on a new machine because they didn't go through all the lube locations the first time with the owner's manual out," he explains. "Then, when there's a breakdown due to no lubrication, they say, 'I thought we got that one.' So that is part of improper maintenance."

   Other maintenance mistakes are failing to oil chains, check gearboxes regularly, and replace belts when they start to show excessive wear instead of waiting for them to break. "Another big one under proper maintenance is to do a general inspection of the machine at the beginning of the day, like checking engine and transmission levels daily or making sure the wheels are straight and tight on a gravity wagon," Gierach adds. Taking shortcuts can lead to downtime in the field.

3. Poor electrical connections

   "This is a big cause of breakdowns with today's newer machinery and is a hard one for owners to try to prevent," Gierach says. "But there are some small things they can do." For example, you can clean away dust and dirt in areas where connectors are located. When cleaning, use compressed air instead of water to keep moisture away from the wires.

4. Overrunning machine's capability

   Gierach says a lot of farmers run machines to maximum performance or at the top of the engineering curve for which the machine was designed. "They just really run it hard to about where it is ready to snort or puke out," he says.

   He says overrunning the machine puts a strain on all the drives and makes breakdowns much more likely to occur. Gierach says that, to prevent this problem, you should find where a machine's maximum performance level is and then "pull it back a hair" so that you are not running it at maximum constantly.

5. Not replacing worn parts when needed

   Gierach says many times when a part on a machine breaks, farmers replace just the part that broke or failed, but fail to check or replace other parts that may have caused the initial failure. Examples include replacing a drive chain when the sprocket was shot or replacing a belt when maybe the pulley was bad.

   By replacing only the broken part, you will temporarily fix the problem but will likely have another breakdown soon because you did not fix all the worn parts.

   Gierach admits that many times these additional parts are more expensive to fix. However, he says you will save money by spending a little more on parts up front because it will cut down on the number of breakdowns later on.

6. Tightener misalignment

   Tighteners that are misaligned or at an angle and not tracking straight to the belt or chain in relation to the main drives are another problem. This puts tension on the belt or chain and can cause it to break or wear excessively. Gierach says you need to watch for misalignment and fix it, which may mean replacing worn bushings in the tightener pivot that may be pushing the belt or chain sideways.

7. Improper storage

   This problem applies especially to combines and planters. For example, often a farmer will park the combine in the shed immediately after harvest and leave it there until the following harvest. "The combine will have corn, dirt and chaff built up alongside a lot of the electrical connections, or dust and debris sitting on chains," Gierach explains. "It is not the best way to be storing them."

   The problem is that debris will attract rodents, which will often nest inside or gnaw at wires. The dust itself can interfere with electrical connections. He suggests cleaning around all electrical connections and other places where debris is built up before storing the machine. Using compressed air is usually the best way to do this.

8. Improper weather-related use

   Sometimes Gierach sees farmers running machines in wet, muddy weather. That can put a strain on the machines, especially combines, because they are not designed for it.

   "Running real wet, tough material through the combine could break shafts or plug up the machine," he explains. "And that puts a strain on everything from feeder house chains to shafts to bearings and pulleys."

   Running tractors in poor weather conditions also can result in problems. "For example, we find mud packed in between dual wheels, which can result in premature wear on the tire sidewalls if you do not clean that out between the wheels before it hardens," Gierach says.

9. Ignoring warning signals

   "Sometimes operators ignore signals alerting them to such things as low hydraulic pressure or if a shaft isn't turning on a combine," Gierach says. "The operator may get out of the cab to check if the shaft is turning. And if it is, he will get back in and run the machine without checking it again, assuming the monitor must not be working." But often there is a problem, he says, and by ignoring it the machine will break down.

   Some farmers not only ignore the signals but disconnect them completely to stop the signal from beeping or flashing. This too can result in breakdowns. Signals commonly disconnected include those for engine temperature, hydraulic oil, shaft speeds, or other parts that might not be turning at the correct speed.

10. Asking untrained personnel to operate equipment

    "This is probably one of the biggest ones," Gierach says. As farms get larger, he says, more farm owners are hiring outside help to operate the equipment without training them. As a result, those who end up driving the machine lack the full understanding of how it works and what it is capable of doing.

"They just know how to make it go," he says. "And you get breakdowns from that. For example, some of these hired men will shift the tractor into park before it comes to a complete stop. So we'll find a lot of broken or sheared off park pins on tractors that are so equipped."

Gierach says these 10 problems account for close to 50% of the breakdowns he sees in his dealership. However, all are avoidable if you take these simple precautions. "Sometimes a machine just breaks down without anyone being able to predict it," Gierach says. "But with a lot of these breakdowns, clearly there are things you can do to try and help yourself out."

Don't forget preseason checks

Randy Budke, service manager at Carrico Implement in Beloit, KS, says the number-one cause of breakdowns he sees is failure to bring in a tractor, combine or related equipment for a preseason maintenance check at the dealership. "There are a lot of breakdowns that no one can predict," Budke says. "But if you get a technician to go from front to back of a machine and check it over, that is the best we can do to prevent breakdowns. If you don't do that much, anything can go."

During the inspection, technicians follow a detailed checklist and visually inspect all parts of the machine. They also run tests, flow-rate hydraulics, pressure-check clutches, check for leaks and hook up laptops to the engine to look for recurring codes that may indicate a problem.

The cost of the inspections varies by the type of machine. Tractor inspections typically run $325, and combine inspections, which can take up to a day and a half, cost around $750. However, Budke says that cost gets absorbed once you agree to make the repairs because the machine has already been taken apart as part of the inspection process, which saves on labor.

Budke says any machine with moving parts should be checked, including planters and balers. "Balers are the number-one machine overlooked," he says. "The baling season is probably as important as the wheat harvest to some customers."

The best time for farmers to bring in their machine is in the off-season. "We try to work this through between October and the first of April," Budke says.

The combustion of fuels in automobiles, jet planes etc all cause the release of several primary pollutants into the air. The burning of fossil fuels in big cities which is seen at most factories, offices and even a large number of homes.

Furthermore is the release of other harmful gases all adds to the state that we see today. Although carbon dioxide plays an important role in various other processes like photosynthesis, breathing an excess of the same also causes harmful effects towards one's health.

Mobile Sources include motor vehicles, marine vessels, aircraft and the effect of sound etc. Chemicals, dust and controlled burn practices in agriculture and forestry management. Controlled or prescribed burning is a technique sometimes used in forest management, farming, prairie restoration or greenhouse gas abatement. Fire is a natural part of both forest and grassland ecology and controlled fire can be a tool for foresters. Controlled burning stimulates the germination of some desirable forest trees, thus renewing the forest. Fumes from paint, hair spray, varnish, aerosol sprays and other solvents Waste deposition in landfills, which generate methane. Methane is not toxic; however, it is highly flammable and may form explosive mixtures with air. Methane is also an asphyxiant and may displace oxygen in an enclosed space. Asphyxia or suffocation may result if the oxygen concentration is reduced to below 19.5% by displacement. Military, such as nuclear weapons, toxic gases, germ warfare and rocketry.

Natural sources Dust from natural sources, usually large areas of land with little or no vegetation. Methane, emitted by the digestion of food by animals, for example cattle. Radon gas from radioactive decay within the Earth's crust. Radon is a colorless, odorless, naturally occurring, radioactive noble gas that is formed from the decay of radium. It is considered to be a health hazard. Radon gas from natural sources can accumulate in buildings, especially in confined areas such as the basement and it is the second most frequent cause of lung cancer, after cigarette smoking. Smoke and carbon monoxide from wildfires. Volcanic activity, which produce sulfur, chlorine, and ash particulates.

And, not only that, it can be caused also by cars, rubbish, factories, smoke, power stations are also some of the things.

Special note: We should stop air pollution by stop to do the things above. It is our responsibility to stop air pollution and our rights to breathe in clean air.