Any technology that is developed and used will have certain components or constituting mechanisms such as materials used, procedure, or technological process involved. The quality of life on planet with respect to environment such as fresh air to breathe, clean water for drinking, and other purposes are essential for all forms of life on earth. Therefore, whatever developments are undertaken should not degrade our environment. It is essential to bear in mind that whatever development, be it construction, new power plants, transportation modes, etc., should be carefully weighed in terms of its contribution to the environment, especially if there are any negative aspects that emerge from use of machinery, equipment, technologies, etc. We should analyze any technology that we use in terms of its cost-benefit study. Here in this chapter, the authors have discussed environmentally friendly technologies for our sustainability to use the natural resources wisely with some case studies of natural as well as manmade disasters.