SciDev.Net: Researchers have shown that pollution from China, India, Nepal and Pakistan can reach altitudes of over 5,000 metres in the Himalayas, contributing to the warming of the atmosphere and potentially affecting the South-East Asian monsoon cycle. They also found that new aerosol particles — ultrafine particles suspended in the atmosphere — can form at these heights. The French–Italian team, whose findings were published in Proceedings of the National Academy of Sciences this …