THE police must find those responsible for disposing of cesium-137—a radioactive material—on a vacant lot at the Batan Indah Residential Complex in Serpong, South Tangerang Banten, and impose serious sanctions. The perpetrators’ action of polluting the environment with toxic and hazardous waste may harm humans as well as other living things. As detected by the Nuclear Energy Regulatory Agency (Bapeten), radiation exposure at the