Pollution may hit Himalayan monsoon clouds

Higher levels of pollution in Asia may affect the formation of clouds high in the Himalayas, perhaps disrupting monsoons and speeding a thaw of glaciers, according to a study on Monday. The report, by scientists in France and Italy, found microscopic particles in the air that can be seeds for water droplets at a Nepalese mountain observatory, the highest in the world at 5,079 metres above sea level.