Opportunities & Challenges for Green Technology in 21st Century

Technology has affected the society and its surroundings in many ways and helped to develop more advanced economies including today's global economy. Science has contributed many technologies to the society which include Aircraft technology, Automobile technology, Biotechnology, Computer technology, Telecommunication technology, Internet technology, Renewable energy technology, Atomic & Nuclear technology, Nanotechnology, Space technology etc. have changed the lifestyle of the people and provided comfortability. In order to sustain this comfort of people in the society, they have to worry about the sustainability of the surrounding environment. In this paper, we propose how the technologies can be made sustainable by adding green component so that they can avoid environmental degradation and converted into green technologies to provide a clean environment for future generations. The paper also discuss the opportunities and challenges for green technology for agriculture, green technology for potable water, green technology for renewable energy, green technology for buildings, green technology for aircraft and space exploration, green technology for education, green technology for food & processing, and green technology for health and medicine in 21st century.