Over 2 million people, mostly children, die from polluted water every year. 1.1 billion people lack access to safe drinking water. Half of the world's hospital beds are filled with people suffering from water-related illnesses. While 308,000 people died in wars in Africa in 1998, over 2 million died from diarrheal diseases. Many developing countries have large portions of their populations without access to safe drinking water. The document discusses experiments showing that tap water boils at a lower temperature than salt water due to minerals in tap water.