Appliances installed in cars or buildings, including air conditioners and air cleansers, have filters designed to filter out airborne pollutants. The air filters, however, can themselves become a ...
About 780 million people—a tenth of the world’s population—do not have access to clean drinking water. Water laced with contaminants such as bacteria, viruses, lead and arsenic claims millions of ...
The sudden outbreak of a novel coronavirus, called severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), has caused the coronavirus disease (COVID-19) pandemic. This pandemic has claimed more ...
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