| http://www.w3.org/ns/prov#value | - hange Research Program in 2009, which much of this report was based on, found that average temperatures in the USA have increased more than 2 degrees Fahrenheit in the past five decades, largely as the result of emissions of heat-trapping greenhouse gases such as carbon dioxide, which are produced by burning fossil fuels.But can this summer's heat be directly attributed to global warming?Staudt co
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