Nanotechnology may make it easier to build lighter and stronger materials that needed less power to produce than conventional materials. Nanotechnology produces less waste than with conventional manufacturing. Nanotechnology provides greater fuel efficiency for aircraft, ships, land transportation and space vehicles. Nanotechnology helps people for curing various diseases such as blood cancer, skin cancer and other diseases which cannot be cured by the medicine and operation. Nanotechnology is helpful for making the people live in healthier and safer. Nanotechnology may make it possible to maintain good environment for all living beings because it uses less power than conventional materials.