If energy conservation is a law of nature why do people worry so much about conserving energy? The law of energy conservation certainly has been in effect since long before the advent of smart lightbulbs and electric cars. In fact, when people talk about saving energy and not wasting energy they are really talking about saving useful energy and not wasting useful energy. When we talk about conserving energy we may be referring to the scientific law of energy conservation or we may be referring to human efforts to conserve useful energy. This presents some obvious questions:
- How can energy be conserved while it becomes less useful?
- Why is some energy more useful than other energy?
Find out more about useful energy when this page gets constructed.