51.   They produced thick smog across a large slice of Southeast Asia, threatening the health of millions.

52.   Air pollution has reached alarming proportions in Tehran in recent years and seriously threatens the health of its residents.

53.   The uranium was stashed unsafely in glass jars and metal tubes, threatening the health of the thieves and their families, Lukin said.

54.   Protesting workers said the amount of overtime they have been putting in due to the high demand for autos has threatened their health.

55.   The commission found that the level of radiation caused by the experiments did not threaten human health in the region.

56.   The Iranian capital, an overcrowded city circled by mountains, is suffocating under a cloud of pollution which threatens the health of its residents.