joining us now is sam gale executive director of china dialogue sam i suspect air pollution is one of them but give us the top 2 or 3 environmental problems that china's facing today. it's certainly air pollution is a major problem not only the choking smoke in eastern seaboard cities but also in western and northern areas of china particularly heavily industrialized co-producing regions that any of us about water pollution from agricultural sources pesticide over use as well as industrial sources or what have pollution particularly in rural areas and related to that sort of the ocean there's major concerns about food safety in china if you think of some of the mass 2nd innings of children from contaminated products or the food brought it here to a clinton on the river in shanghai a few years ago major concerns about environment and health and that extends also to protests against for example the potential sites you know waste incineration plants patrick chemical plants nuclear facilities coal power plants in cities. i want to look at china's international commit men sat particularly