Book excerpt: The ozone layer was discovered in 1913 by the French physicists Charles Fabry and Henri Buisson. The ozone layer has the capability to absorb almost 97-99% of the harmful ultraviolet radiations that sun emit and which can produce long term devastating effects on humans beings as well as plants and animals. The earth's stratospheric ozone layer plays a critical role in absorbing ultraviolet radiation emitted by the sun. In the last thirty years, it has been discovered that stratospheric ozone is depleting as a result of anthropogenic pollutants. Ozone layer depletion is one of the most serious problems faced by our planet earth. It is also one of the prime reasons which are leading to global warming. Ozone Layer depletion describes two related phenomena observed since the late 1970s: a steady decline of about four percent in the total amount of ozone in Earth's stratosphere, and a much larger springtime decrease in stratospheric ozone around Earth's polar regions. The latter phenomenon is referred to as the ozone hole. Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. This book describes of international efforts to protect the ozone layer, the greatest success yet achieved in managing human impacts on the global environment. The book provides an account of the ozone-depletion issues from the first attempts to develop international action in the 1970s to the mature functioning of the montreal regime. This Book represent state of knowledge regarding examines the parallel developments of politics and negotiations, scientific understanding and controversy, technological progress, and industry strategy to draws some conclusions concerning the setting of goals for that shaped the issue's development and its effective management. Simply explained, Ozone layer depletion is an important book bringing together diverse viewpoints from Environmentalist, state agencies and regulators, for all who wish to save Earth with quality life.