India's plastic man Professor Rajagopalan Vasudevan joins the cleanathon. Prof. Vasudevan firmly believes that one person's waste is another person's treasure. The Madurai resident has built roads using plastics instead of dumping them into garbage. His technology has been used across 15 districts all over India.

Also Read: 'One Man's Trash Is Another Man's Treasure': Meet India's 'Plastic Man'