Right now, the main source of energy consumed by developed nation is fossil fuels. The world is increasing its use of fossil fuels, and fossil fuels are a nonrenewable resource. We will eventually run out of fossil fuels, so we need to find a way to become less dependent on them. Also, 90% of Earth's greenhouse gas emissions (pollution) come from fossil fuels. There are six other energy sources that we could use, which are: solar, hydroelectric, nuclear, geothermal, wind, and biomass. Most of these alternative energy sources do not create pollution and are renewable sources, unlike fossil fuels. The world should use as much of the hydroelectric energy source as possible.

We should switch our electricity source to hydroelectric. The hydroelectric energy source is renewable and there is no pollution involved in the process. Hydroelectric power is generated through the force of falling or flowing water. How this process works is that the moving water spins a turbine, which creates electricity. This process takes place in dams. All that the world would have to do to switch to hydroelectricity is that we would have to build dams near cities.

We should switch our car fuel source to electric energy created by hydroelectric power plants. People could update their garages to have power cords to recharge their vehicles at night. There is no pollution created through this entire process.

Even though that we will not run out of fossil fuels for decades, we need to be prepared for the future, and it would be nice to not have any more pollution in our world.