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Welcome to the World news. World news keeps you updated news around the nations.

Today's topic is "Why Air Pollution Has Decreased Due to Coronavirus"

In an effort to stop the spread of the coronavirus, a third of the world's population has gone into lockdown, meaning most people must stay at home, and many aren't going to work. That means fewer people driving cars, fewer factories running and less power being generated. As a result, less pollution is being released into the air.

Air pollution caused by the emission of nitrogen dioxide (NO2) in eastern and central China was 10-30% lower in January and February compared to the same months in 2019, according to NASA. A report from Carbon Brief said that China's carbon dioxide (CO2) levels have also fallen, with a 25% reduction in February 2020 compared with February 2019.

Most man-made CO2 and NO2 comes from burning fossil fuels for things like transport and power.

The Chinese government said that there were 21% more "good quality air days" in Hubei province in February compared to February 2019. Wuhan, home of the first coronavirus patient, is the capital of Hubei province, and the first Chinese city to be locked down due to the coronavirus.

Other parts of the world, including Europe, the US and India, are also seeing less pollution.

In Europe, Italy has been hit hardest by the coronavirus. Its capital city, Rome, has seen between 26% and 35% less NO2 compared to 2019.

New York City, the hardest hit city in the US, has seen less CO2 and methane (CH4), and half as much carbon monoxide (CO) in March compared to last year, according to Professor Róisín Commane from Columbia University. Other parts of the US, like California and Washington, have also seen less NO2.

At midnight on March 25, India started the world's largest lockdown, asking its population of 1.3 billion to stay home for at least 21 days. Just two days later, on March 27, India's capital city, New Delhi, had NO2 levels that were 71% lower than a week before.

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Why Air Pollution Has Decreased Due to Coronavirus