Tidal surges now isolate parts of Sagar Island, south of Ghoramara in the Hugli River. This story appears in the July 2019 issue of National Geographic magazine. It was when the body of a long ...
Air quality index is used by government agencies to communicate to the public how polluted the air is. Public health risks increase as the AQI rises. Eight pollutants namely particulate matter PM10, ...
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