Researchers from the University of Manchester (United Kingdom) predict that people living in West Bengal (India) could be exposing themselves to potentially cancer-causing arsenic by eating locally grown rice. It has been told in an international meeting of environment experts held at Manchester that the presence of naturally occurring petroleum in West Bengal and Cambodia could be responsible for the release of arsenic into water used for drinking. Researchers from Manchester University presented their findings at a workshop on arsenic in groundwater. Arsenic in ground waters in Bangladesh and West Bengal constitutes a major hazard to human health. Children are at a higher risk than adults in the case of arsenic poisoning. Several tens of millions of people are affected since they use arsenic poisoned water for drinking, cooking and irrigation. Researchers at the Manchester University and the Swiss Federal Institute of Aquatic Science and Technology have been among the first to identify similar hazards in Cambodia and Vietnam. Mickey Sampson of Resource Development International Cambodia said that more than 1,500 Cambodian villages are at high risk from arsenic in ground water.