The gases that absorb and emit energy of gravitational and electromagnetic radiation within the thermal infrared range are known as greenhouse gases. These gases play an important role in the maintenance of the temperature of the Earth. They are the main cause of the greenhouse effect. Some of the greenhouse gases that are present in the Earth's atmosphere are carbon dioxide, nitrous oxide, water vapour and ozone. The impact of these individual gases on the total greenhouse effect depends upon their atmospheric lifetime, global warming potential and proportion of direct effects at a given moment. Burning of fossil fuels like coal, agricultural activities and use of chlorofluorocarbons are the sources of emission of these gases. Various natural processes and negative emissions of these gases are some of the ways to control their release in the atmosphere. This book unfolds the innovative aspects related to this area which will be crucial for the holistic understanding of the subject matter. Different approaches, evaluations, methodologies and studies related to this field have been included in this book. It will provide comprehensive knowledge to the readers.