THE time bomb is called garbage. When tons of the organic waste material are left to pile up unprocessed, that’s the time the bomb begins to tick. Loud explosions heard before the mountain of garbage rolled down onto the village of Leuwigajah last Monday is proof of the theory.

Firman L. Syahwan, a researcher at the Agency for the Assessment and Application of Technology, says the explosions occurred because methane gas (CH4) produced at t