When one starts a car or burns wood, the last thought on their mind is the consequences to these actions. Unfortunately, the daily dangers to earth are not widely know. Due to the constant change of society, this planet must cope with various problems. One of the most important ecological structures is the ozone layer. The same shield that protects us from the sun’s deadly radiation, can also act as a blanket engulfing us in heat. This situation is know as the . What is the , what causes it, and what can be done to control it? The problem o ....