Alternative energy sources are needed to replace fossil fuels and reduce environmental damage from pollution. Fossil fuel use is rapidly depleting non-renewable resources and harming the ozone layer, affecting the climate. New renewable energy concepts being developed include generating power from algae, solar wind, harnessing the Earth's rotation, and an 8-wheel generator that uses both wind and water. These future energy sources will be renewable, reduce waste, provide cleaner energy, offer price stability, and improve national security compared to fossil fuels.