1. Nanotechnology is a new field of science and engineering which uses different techniques to create and modify new types of materials . It’s called nanotechnology because uses devices at an molecular level measured in nanometre. Nanotechnology could bring benefits to the environment with the developing of machines using hydrogen as fuel . How does a hydrogen fueled motor work ? It’s works thanks to the fuel cell . Fuel cell is a device that converts the chemical energy from a fuel into electricity through a chemical reaction with oxygen or another oxidizing agent (Hydrogen) .A fuel cell receives two flow one of Hydrogen with a negative pole and Another of Oxygen with a positive pole. This process end with the production of energy and reject emissions . This reject emissions aren’t polluting at all because they are steam and hot water. The fuel cell technology could be used both for hydrogen fuel motor machines and vehicles and both for power plants. Car producers are following two different ways : fuel cell motor or motor using internal burnings witch uses liquid hydrogen as an fuel. The use of hydrogen remains still dangerous .The only problem is that hydrogen is very flammable. For that reason the tanks must be more safety than the ordinary tank . Whit the liquid hydrogen the tank temperature must be around -253° for preventing it’s evaporation. In comparison with the normal motors the ones using hydrogen fuel are more efficient and less polluting. Now a day cars using hydrogen as a fuel are starting to be sold to the public. For this reason different companies such as nonoil are developing a new type of oil for the hydrogen fuel motors. Some day maybe hydrogen would be used as a fuel for airplanes busses and even spaceships . We already have in England 10 busses using hydrogen as a fuel and easy jet has got different airplanes that are using hydrogen .We hope that some day every single vehicle in the world would use hydrogen as a fuel . (link: ecoage.com , Wikipedia.it , understanding nano.com , www.nanoil.it)