Chemical Sciences have been playing an important role in the developed and developing world namely in field of energy, water, agriculture and health. These areas need new

materials with specific properties which chemical sciences satisfy. Chemical Science forms a base for nano technology providing polymers, clusters and nanoparticles. Although the application of nanotechnology is gaining popularity, environmentalists have warned about the health hazard of nanoparticls. Significant advances have been made in harnessing energy from biomass and solid waste. The waste after gasification may be used as useful purposes. Use of biodiesel is an energy saver and pollution reducer too. This is being produced from jatropha which grows in wasteland needing little water. The sun provides enormous energy to the earth which has been converted to thermal energy.