Non-renewable Energy Sources. Energy generation is an ongoing topic in the United States and worldwide. Historically, the nation’s main energy source is fossil fuels. However, nuclear power has also contributed throughout history. These energy sources are considered non-renewable resources because their inputs are limited in both quantity and availability. Select either fossil fuel energy or nuclear power as the main topic for this paper. Discuss the impact that the selected source has had on the environment. Additionally, select one environmental disaster that has occurred because of your selected fuel source and describe the disaster in detail. (a) What, specifically, occurred? (b)What were the ecological and human health effects? (c) How was the disaster handled? (d) And, what did we learn from it? If applicable, discuss what environmental policies were established because of the selected disaster.