Well known for his global change activities Illacs latest project introduces zero cost lighting method using plastic bottle filled with water. The bottle is mounted into the roof of a dark shed where it is able to transmit sunlight in order to enlight the interior. The example comes from Malabon Metro Manila in the Phillippines
The My Shelter foundation (led by Illac Angelo Diaz) acquired site from the local government in San Pablo and sponsorship by Pepsi to build their first PET bottle school in Asia on the Philippines. For the school construction, 9000 PET bottles were collected during a public run in San Pablo and filled with mud, sand, straws, and even manure, all of this mixed with water. The space between the bottles is also filled with adobe which later simply dries in the sun. The structure is strenghtened by steel bars.
There exist several examples of such schools, most often realized by non-governmental organisations, such as My Shelter and Hug it Forward. Building the object is usually just visible result of primar intentions: community support together with cleaner landscape. The latter has already built a number of schools in Guatemala. The precursor of Hug it Forward is the independent organization Pura-vida founded by Susana Heisse in 2005.