Greenhouse gas emissions, such as carbon dioxide, are created in part by burning oil and coal for transportation and electricity.
VOA: special.2009.12.26
Climatologists say that greenhouse gas emissions, such as carbon dioxide from burning oil and coal, contribute significantly to global warming.
VOA: standard.2009.11.09
Now is the time for us to lead,". One of the bill's main provisions calls for reducing carbon dioxide and other emissions.
VOA: standard.2009.06.27
Scientists say a 25 to 40 percent cut in carbon-dioxide emissions is needed to control global warming.
VOA: standard.2009.12.09
Greenhouse gas emissions such as carbon dioxide are thought to be a major cause behind rising temperatures that have lead to extreme weather and food shortages.
VOA: standard.2009.09.28
Beijing has refused to agree to cap its overall growth in its consumption of fossil fuels or reduce its emissions of carbon dioxide and other greenhouse gases.
VOA: standard.2010.08.03
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