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Observations reveal that the global climate has
warmed over the past century (1900 to 1999), and the warming has been
accelerating in the past two decades. There is a widely-accepted
scientific consensus that this change is largely due to an increase
in the atmospheric concentration of CO2 and other greenhouse
gases (GHGs) as a result of human activity. A more detailed
introduction to this topic is provided in The
Issue of Climate Change.
Read more about Climate Warming
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