As we all know, coal is a non-renewable energy source, but enough of it can be found in the United States, which at today’s level of consumption can last for over 200 years. But coal burnt gives off carbon dioxide, a greenhouse gas responsible for global warming.
Coal-based power plants in the United States have been using 100 billion gallons of cooling water daily in the production of energy. A joint research is being conducted between the Nalco Company and Argonne National Laboratory to develop technologies in re-using and recovering cooling water used by these power plants.
Reserves of petroleum, another source of energy will be at current consumption levels, depleted in the very near future. There are other alternatives such as wind and solar energy, geo-thermal, and by far the most promising environment-friendly alternative, bio-fuel, a renewable energy source.
Coal-based power plants is probably the most harmful of energy sources for the environment.
National Renewable Energy Laboratory
The Kyoto Protocol
Planet Under Pressure: Guide to Climate Change
The Big Emitters
Investigation Reveals Widespread Suppression of Federal Climate Research
Germany Plans CO2-Free Power Plant