In the 1980s, Hasan Poerbo, head of the Environmental Studies Center at the Bandung Institute of Technology (ITB), built a Scavenger Home Area to allow registered scavengers to obtain legitimate ID cards and official marriage certificates.
Without ID cards, it was impossible for the “itinerant scavengers” to marry. With this problem solved, Hasan won the support of thousands of Bandung scavengers and then of the environmentally friendly mayor to make the West Java capital the cleanest city of the Preanger.
K.H. Basid, head of the An Nuqayah pesantren (Islamic boarding school) in the Guluk-Guluk area of the East Java town of Sumenep, together with his students, planted trees for many years to grow a forest on the dry and hot island of Madura. The effort gradually cooled the area and prompted rainfall, which created a creek full of water for wudhu (ablution). The cleric&r.