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The Problems with GasolineGasoline
has two problems when burned in car engines. The first is contributing
to smog and ozone in big cities. The second is emissions of carbon
and greenhouse gases. Unfortunately, the internal combustion engine is not
perfect. In the process of burning gasoline, it also produces carbon
monoxide [a poisonous gas], Nitrogen oxides [main source of urban smog] and
unburned hydrocarbons [main source of urban ozone]. When
cars burn gasoline, they would ideally burn it perfectly and create nothing but
carbon dioxide and water in their exhaust. Unfortunately, the internal
combustion engine is not perfect. In the process of burning the gasoline, it
also produces:
Carbon
is a problem. When it burns, it turns into lots of carbon dioxide gas. Gasoline
is mostly carbon by weight, so a gallon of gas might release 5 to 6 pounds (2.5
kg) of carbon into the atmosphere. The If
it were solid carbon, it would be extremely noticeable -- it would be like
throwing a 5-pound bag of sugar out the window of your car for every gallon of
gas burned. But because the 5 pounds of carbon comes out as an invisible gas (carbon dioxide), most of us are oblivious to it. The carbon dioxide coming out of every car's tailpipe is a greenhouse gas. The ultimate effects are unknown, but it is a strong possibility that, eventually, there will be dramatic climate changes that affect everyone on the planet (for example, sea levels may rise, flooding or destroying coastal cities).
Report
links global warming to man-made burning of fossil fuels
POSTED:
3:13 a.m. EST, February 2, 2007 PARIS, France (AP) -- The world's leading climate scientists, in their most powerful language ever used on the issue, said global warming is "very likely" man-made, according to a new report obtained Friday by The Associated Press. The phrase "very likely" translates to a more than 90 percent certainty that global warming is caused by man. The panel quickly agreed Thursday on two of the most contentious issues: attributing global warming to man-made burning of fossil fuels and connecting it to a recent increase in stronger hurricanes.
Why
doesn't gasoline burn cleanly? Gasoline
is a liquid formed purely of carbon and hydrogen. Gasoline has 150 ingredients.
Gasoline is made up of carbon chains of different lengths ranging from C7H16
through C11H24. If you could burn gasoline as a vapor with a hot flame and
plenty of oxygen, you would get nearly pure carbon dioxide and water as the
combustion products. That is why you can burn natural gas, LP gas and kerosene
indoors in the winter. An appropriately designed kerosene heater, for example,
can be "ventless". Automobile
exhaust, unfortunately, contains a lot more than carbon dioxide and water. The
most important pollutants in car exhaust include:
There
can also be some impurities like sulfur in the gas that form sulfur oxides. The
idea behind a catalytic converter is to try to eliminate the carbon monoxide,
nitrous oxides and hydrocarbons by reacting them with plenty of oxygen on a
platinum catalyst. However, catalytic converters are not perfect, so some of the
pollutants escape. On hot summer days we see the effect of these pollutants in the form of smog and ozone. Nitrogen oxides and hydrocarbons mix with air and get bombarded by ultraviolet rays in sunlight. Nitrogen dioxide releases an oxygen atom, which combines with oxygen gas to form O3 (ozone) at ground level. What is the true cost of oil?
“ Imagine if President Bush, after 9/11, simply declared war on oil and put the
whole nation behind ending our crippling dependence on it. Imagine if we had spent the money we allocated to the war in There is little question that The Declaring war on oil should be — literally — a war, giving the president
and Congress emergency powers to mobilize the nation as never before. I am not talking about platitudes, which we are once again hearing from
presidential candidates. I remember watching Jimmy Carter’s 1977 televised speech in which he said
dealing with In the years since, every president and presidential candidate has repeated
the call to lessen Today the crisis is worse than ever as oil soars over $100 a barrel. At current rates, And he’s right; the beneficiaries of this wealth transfer are often the
“bad guys” — The numbers show our dependency. Currently, about 70 percent of We
need to declare war on oil. Here’s how such a “war” might work. The president and his
administration would have emergency powers to develop,
design, create, and implement alternative energy sources — just like the
president can do during a full blown war. And since this would be a war, the
trial lawyers and environmental extremists wouldn’t be allowed to bring
millions of dollars of time-consuming law suits to stop the implementation of
these energy sources.
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