Our fault

Everything we have done to the Earth is our fault, Fossil Fuels are going to dissapear and we need sustainable sourcess of energy, till now we have found:
1.Hydroelectric, this produces energy by the force of the movement of water, this moves a turbine.
2.Wind, wind moves the rotor blades in a wind turbine, the turbine produces electricity.
3.Biomass, this is produced by animals, they produce methane gas(flamable) in their process of egestion. It is a nice energy for internal combustion engines.
4. Thermal, it is mainly used in Island, there, there are underground volcanoes that heat water in the underground and the vapour left can move a turbine.
These are the main ones.
5.Solar, there are several ways of using this natural energy, one is just by heating water with sunlight and the other one uses a semiconductor which produces electricity.