Have you seen what a “green” public restroom is like? No, I’m not talking about the colour, but how sustainable and environmental friendly a restroom can be. The above photo is an example. It may look like a typical restroom, but behind the mirrors you could see the white tanks which is part of the “Innovative Rainwater Harvesting System” invented by Adamson University Engineering Dean Antonio F Mateo. The multiple tanks harvest rainwater and are purified for use. If you are curious to try this, head over to Manila and witness the iconic Rizal Park Go Green.