Environmental Nanotechnology

Environmental Nanotechnology is the application of nanotechnology techniques to reducing or preventing damage to our environment.
One way nanotechnology can have an impact on our environment is by providing tools to clean up existing pollution. For example, the removal of arsenic from well water that could provide needed drinking water in certain parts of our world.

Another way that nanotechnology can improve our environment is by enabling cleaner energy or material production processes. 
Nanotechnology has the potential to cause significant changes in air quality, water quality and energy generation, leading to significant changes in our environment.