- There is the same amount of water on Earth as there was when the Earth was formed. The water from your faucet could contain molecules that dinosaurs drank.
- Water is composed of two elements: hydrogen and oxygen. Two hydrogen plus one oxygen = H2O.
- Water regulates the Earth's temperature. It also regulates the temperature of the human body, carries nutrients and oxygen to cells, cushions joints, protects organs and tissues, and removes wastes.
- The human brain is 75% water; a living tree is also 75% water.
- Although the average person can live for about one month without food, we can only survive about a week without water.
- What we do to the environment affects the quality of our drinking water. What we pour on the ground will end up in our water; what we spray into the air will also end up in our water.
- The average total home water use for each person in the U.S. is about 50 gallons per day.
- Water expands by 9% when it freezes. Frozen water (ice) is lighter than water, which is why ice floats in water.