Environmental Science for Students provides a fascinating look at some of the most important environmental issues of our time. More than two-thirds of the planet is covered by water. Because water is vital to all life, both the quality and availability of this natural resource is critical. When the supply of available fresh water is overused, polluted, or affected by climate change, a whole new problem arises - water scarcity. Consider the potential environmental, economic and health effects of water pollution, and learn what can happen when an area's water supply dwindles. See how conservation and innovation can help to combat this problem. From the passing of the Clean Water Act in 1972, to the building of desalination plants, discover some of the tremendous strides that have been made in maintaining the quality and quantity of the world's water supply.