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How EarthSense believes in IoT technologies to improve air quality amid Covid-19 ‘intervention’ – Internet of Things News
Delhi, widely cited as one of the world’s most polluted cities, has seen something of a transformation. So have other major hubs; Beijing, Bogota, Sao Paulo. The vista has changed from gloomy grey to beautiful blue. Delhi’s air quality index (AQI) levels have dropped to below 20 – anything over 25 being considered unsafe by the World Health Organisation – having been 900 and above at times last year.
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