Daily news articles relating Alternative Energies. The Earth times and pollution with daily updates on breaking news. Stay informed, learn how you can take action to reverse global warming. Offshore wind turbines near Copenhagen, Denmark Alternative energy is any energy source that is an alternative to fossil fuel. These alternatives are intended to address concerns about fossil fuels, such as its high carbon dioxide emissions, an important factor in global warming. Marine energy, hydroelectric, wind, geothermal and solar power are all alternative sources of energy. The nature of what constitutes an alternative energy source has changed considerably over time, as have controversies regarding energy use. Because of the variety of energy choices and differing goals of their advocates, defining some energy types as "alternative" is considered very controversial. >> Tell Us << You are witnessing of Pollution, tell us how you feel after witnessing this major event in history of the earth.