With the increasing population and rising demand for better nutrition and food security, hydroponics stands to be a hope for the next generations to come. Hydroponics is one method of cultivation that eliminates soil and substitutes it with nutrient solution. It is a method that is suitable to grow a wide variety of crops like cereals, vegetables, fruits, ornamental, medicinal and fodder crops. Hydroponics is of various types like Nutrient film technique (NFT), Deep flow technique (DFT), Root dipping technique, Floating technique and Capillary action technique. This method has many more advantages when compared to the conventional agriculture like less area requirement for cultivation, non-dependence on climatic and agro-meteorological factors, soil fertility and soil destruction, efficient nutrient and water management, weed and pest free environment and leaving no chemical residues and the system's management and scope for less area and more yield. Hydroponics has the potential to tackle complex problems like climate mitigation, global hunger, malnutrition, urbanization and extra celestial farming. In this paper we have discussed the basic science, nature and concepts of hydroponics. [ABSTRACT FROM AUTHOR]