Almost 35 years have passed since the Intergovernmental Panel on Climate Change released its first assessment report. It found human activities were substantially increasing concentrations of carbon dioxide (CO₂) and other gases in the atmosphere, which was warming the global climate. Almost 35 years have passed since the Intergovernmental Panel on Climate Change released its first assessment report. It found human activities were substantially increasing concentrations of carbon dioxide (CO₂) and other gases in the atmosphere, which was warming the global climate. Environment Phys.org – latest science and technology news stories