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They are part of a group of 50 which have received £20 million funding from the United Kingdom. Eighteen research institutions in India are among a group of 50 institutions called the South Asian Nitrogen Hub (SANH) in the United Kingdom and South Asia that have secured £20 million (about Rs200 crore) from the U.K. government to assess and study the quantum and impact of “nitrogen pollution” in South Asia. While nitrogen is the dominant gas in the atmosphere, it is inert and doesn’t react. However, when it is released as part of compounds from agriculture, sewage and biological waste, nitrogen is considered “reactive”, and it may be polluting and even exert a potent greenhouse gas (heat trapping) effect.