| The Earth's surface temperature has risen
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| | doubled, and nitrous oxide concentrations
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| by about 1 degree Fahrenheit in the past
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| | have risen by about 15%. These increases
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| century, with accelerated warming during
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| | have enhanced the heat-trapping
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| the past two decades. There is new and
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| | capability of the earth's atmosphere.
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| stronger evidence that most of the
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| | Consequently, the temperature of the
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| warming over the last 50 years is
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| | planet earth is rising.
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| attributable to human activities. Human
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| | Fossil fuels burned to run cars and
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| activities have altered the chemical
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| | trucks, heat homes and businesses, and
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| composition of the atmosphere through the
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| | power factories are responsible for about
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| buildup of greenhouse gases-primarily
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| | 98% of world carbon dioxide emissions,
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| carbon dioxide, methane, and nitrous
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| | 24% of methane emissions, and 18% of
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| oxide. The heat-trapping property of
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| | nitrous oxide emissions. Increased
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| these gases is undisputed although
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| | agriculture, deforestation, landfills,
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| uncertainties exist about exactly how
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| | industrial production, and mining also
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| earth's climate responds to them.
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| | contribute a significant share of
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| Energy from the sun drives the earth's
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| | emissions. All these have dramatically
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| weather and climate, and heats the
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| | reduce the lifespan of living earth.
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| earth's surface; in turn, the earth
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| | The quest for efficient energy affects
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| radiates energy back into space.
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| | every country on the planet. Worldwide
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| Atmospheric greenhouse gases (water
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| | there is an increasing interest in
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| vapor, carbon dioxide, and other gases)
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| | developing clean, reliable alternatives
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| trap some of the outgoing energy,
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| | to petroleum fuels. Many smart, safe, and
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| retaining heat somewhat like the glass
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| | clean alternative power sources are
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| panels of a greenhouse.
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| | available in the market.
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| Without this natural "greenhouse effect,"
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| | People can easily install these clean
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| temperatures would be much lower than
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| | power sources at their home as
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| they are now, and life as known today
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| | alternative energy to help reducing
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| would not be possible. Instead, thanks to
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| | carbon dioxide emission as well as
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| greenhouse gases, the earth's average
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| | reducing their utilities bill.
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| temperature is a more hospitable 60°F.
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| | In recent year, people has come up with
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| However, problems may arise when the
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| | alternative power sources to run their
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| atmospheric concentration of greenhouse
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| | cars in order to reduce the spending on
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| gases increases.
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| | petrol gas and of course, reduce the
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| Since the beginning of the industrial
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| | carbon dioxide emission.
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| revolution, atmospheric concentrations of
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| | Please play your part on global warming.
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| carbon dioxide have increased nearly 30%,
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| | It is easy and at the same time, you
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| methane concentrations have more than
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| | could save money!
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