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World Health Organization (WHO) quality air standards were not met by a single country in the year 2021, the year of recovery from COVID. A pollution survey collected data from 6,475 cities around the world. The heavy smog in all of them were not up to par with the standards, which scientists claim is due to the relapse from COVID. 

 

Photo by: https://pixabay.com/photos/city-smog-gray-building-4772482/

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The navigator fish

Scientists attached electrodes to a goldfish to understand the fish’s navigational system. They found that nerve cells that have a decreasing activity as the fish

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