Global Warming: If You Can't Stand the Heat

Baird, Stephen L.
November 2005
Technology Teacher;Nov2005, Vol. 65 Issue 3, p13
Academic Journal
This article focuses on global warming. Global warming is the progressive, gradual rise of the earth's average surface temperature, thought to be caused in part by increased concentrations of greenhouse gases (GHGs) in the atmosphere. It has been reported that the Earth's temperature has risen by about one degree Fahrenheit in the past century, with accelerated warming during the past two decades. Analysis of the various human and natural influences on the global climate indicates that this warming cannot be explained without taking into account human emissions of GHGs. Human activities have altered the chemical composition of the atmosphere through the buildup of greenhouse gases, primarily carbon dioxide, methane, and nitrous oxide. Atmospheric greenhouse gases trap some of the outgoing energy, retaining heat much like the glass panels of a greenhouse. Without this natural greenhouse effect, temperatures would be much lower than they are now and life as we know it would not be possible. Greenhouse gases are responsible for maintaining the earth's average temperature at approximately 60 degrees Fahrenheit.


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