Topic : Rainwater Harvesting All are thinking. Water is the elixir of life. Though 2/3 of the world is covered by sea water, the potable water is a little more than just 1% of water available on this globe. Even this 1% is not easily available to us. A part of it is found in the poles and the rest flows as river and gets lost into the ocean. The water that percolates down the porous soil and gets stored alone sustains most of the human race. As the world population has exploded the pressure on potable water is also high. So, there is a need to preserve Rain water to prevent wars between countries on water. When rains fail occasionally, the animals in forest migrate to long distances in search of water. Small check dams built in different places hold rain water and help animals face severe droughts in forests. Man has ever been the most ungrateful wretch. He keeps on digging bore-wells and uses water to the maximum without ever bothering to replenish the water tables. As a re...