Out of the various renewable energy sources, geothermal energy is one of the few sources that is actually stable and environment friendly compared to fossil fuels. Renewable energy sources such as solar energy, wind energy, and hydroelectric energy are all unstable since they rely on the environment. For example, clouds will decrease the amount of energy produced by solar panels and a drought will decrease the energy output of hydroelectric dams. Geothermal energy, however, uses the underground reservoirs of steam and hot water, which will be used to turn a secondary liquid into steam, to drive a turbine. This is much more stable than the other sources since there are no other environmental factors that will effect it.
Geothermal Energy also has a relatively smaller impact on the environment than sources such as fossil fuels, biomass, and wood. It releases low concentrations of hydrogen sulfide and some other geothermal fluids. Yet, these are much smaller than the emissions of fossil fuels and is much safer than the nuclear wastes of nuclear power plants.
Geothermal ener gy may be a reliable and clean energy source as a replacement to fossil fuels in the future.
References:
http://www.nationalgeographic.com/envir … al-energy/

I completely agree that geothermal energy is a good alternative to fossil fuels for energy however as you stated there are some draw backs that we must take into account. Like you said at geothermal energy sites sulfur dioxide and silica emissions can be released which continues to add to our air pollution problems. Another negative factor is that good geothermal energy reservoirs are hard to find so are location specific. This poses a question about how we will transport the energy made to homes that need it. Lastly, Geothermal energy can actually affect the land  by creating earth quakes and making the land less stable. Both Germany and New Zealand have earthquakes due to hydraulic fracturing, an effect of geothermal energy sites.
I believe that geothermal energy definitely has potential to be a great alternative to fossil fuels however first we need to find ways to fix the problems that geothermal energy creates.

I really think that geothermal energy could be something. However, as geothermal energy and all other kinds of energy sources prove, there is always a problem with each energy solution. Geothermal energy releases air pollution and causes earthquakes. Wind turbines kill birds. Solar energy doesn't work on cloudy days. Even though this is the case, geothermal energy seems to be the closest to the "perfect" renewable energy method. However, there are problems that are caused by humans trying to figure out a new energy method. As soon as those issues are addressed and solved, geothermal energy could be the future of energy on this earth.

We can see that the cost of renewable energy has become more affordable, and it has created so many new jobs. Would you be in favor of requiring all new building to use alternative energy sources?

I agree because Iceland get a quarter of it's energy from hot springs for heating, and because of this it has one of the highest percentage of renewable energy used in the world.