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Unfortunately, humans are the most polluting species.
Earth is very good at recycling waste, but people are generating far more than earth can cope with.
Bio-fuels made from plant-derived ethanol and oils are used to reduce dependence on fast-depleting oil reserves.
Wind turbines and solar energy generators can help meet local electricity needs and take some of the load off the power grid.
This includes Nanotechnology filtration systems that purify water, absorbent materials and oil-digesting bacterial cultures to clean up oil spills, and low-sulfur fuels and efficient carbon filters to reduce air pollution.