Global Warming in Climate Change and Sustainable Energy Development

Global warming is the increase in the average temperature of earth’s near-surface air and oceans since the mid-20th century and its projected continuation. According to the 2007 fourth assessment report by the intergovernmental panel of climate change global surface temperature increased during the 20th century. Most of the observed temperature increase since the middle of the 20th century has been caused by increasing concentrations of greenhouse gases, which result from human activities such as the burning of fossil fuel and deforestation.