Rajendra Singh has devoted his life to solving Rajasthan 's water problem . Rajasthan is India 's largest state and also one of the driest . Singh says water is a resource we can not go to waste . Ten thousand water harvesting structures have been built in the last ten years .
Rajendra Singh has devoted his life to solving Rajasthan 's water problems . Rajasthan is India 's largest state and also one of the driest . Singh says rainwater is a resource we can not afford to waste . Ten thousand water harvesting structures have been made in the last 25 years .