리틀팍스

 I think the cleanest form of energy is solar, wind, and water energy and human energy. Unlike Nuclear power after becoming used they aren't dangerous.

First, solar, wind, and water energy are a type of very clean energy. For example, Solar panels make electricity from the direct heat of the sun. Watermills which make electricity from running water is another example.

Second, human energy is the best way to exercise and make electricity at the same time. Human energy is made when something likes a bicycle that makes energy when people pedal it. When people pedal it, the movement of the wheels make electricity. For instance, when someone pedals the bicycle looking thing for an hour we can light up a lamp for 30 minutes.

In conclusion, natural energy and human energy are the best way to power up the cities all over the world. However, my heart was broken when I heard that many people don't use human or natural energy.