In 2007, the Intergovernmental Panel on Climate Change concluded that human activities are the primary cause of recent global warming.

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This statement is true. The Intergovernmental Panel on Climate Change (IPCC) is a United Nations scientific body that assesses the science related to climate change. In 2007, it released its Fourth Assessment Report, which concluded that "warming of the climate system is unequivocal" and that "most of the observed increase in global average temperatures since the mid-20th century is very likely due to the observed increase in anthropogenic (human-caused) greenhouse gas concentrations."

In 2007, the Intergovernmental Panel on Climate Change Concluded That