Archive for the ‘GREEN HOUSE GASES’ Category
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Record Increase in U.S. Greenhouse Gas Emissions Sparks Global Controversy
Wednesday, November 18th, 2009
U.S. greenhouse gas emissions increased 1.7 percent between 2003 and 2004, setting a new global record for the highest level of emissions ever recorded by any country. The U.S. Environmental Protection Agency released the new figures quietly on Monday, April 17, 2006, but they didn’t remain quiet for long. British scientists quickly condemned the increase [...]
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Are Levels of Greenhouse Gases Increasing?
Wednesday, November 18th, 2009
Human activity is increasing the concentration of greenhouse gases in the atmosphere at a rate that has probably never been seen before in the planet’s history. There is no serious scientific disagreement or debate on this point.
Greenhouse Gases at Record Levels
Prior to the start of the Industrial Revolution, the levels of carbon dioxide in [...] -
Greenhouse Gases at Highest Levels in 650,000 Years
Wednesday, November 18th, 2009
Scientists working in Antarctica have confirmed that levels of key greenhouse gases that contribute to global warming, such as carbon dioxide and methane, are higher today than at any time in the past 650,000 years.
Humans Responsible for Global Warming
Their research also shows that human activity is the cause of the dramatic increase, which refutes [...] -
What are Greenhouse Gases?
Wednesday, November 18th, 2009
Many greenhouse gases occur naturally, such as water vapor, carbon dioxide, methane, nitrous oxide, and ozone. Others such as hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), and sulfur hexafluoride (SF6) result exclusively from human industrial processes.
Human Activities and Greenhouse Gases
Human activities also add significantly to the level of naturally occurring greenhouse gases:
Carbon dioxide is released into the [...] -
What is the Greenhouse Effect?
Wednesday, November 18th, 2009
The “greenhouse effect” often gets a bad rap because of its association with global warming, but the truth is we couldn’t live without it.
What Causes the Greenhouse Effect?
Life on earth depends on energy from the sun. About 30 percent of the sunlight that beams toward Earth is deflected by the outer atmosphere and scattered [...]