A sewage company in St. Petersburg, Russia, is teaching us all that when it comes to the quality of the air that you breathe, it pays to rely on your own senses sometimes.
Vodokanal, a St. Petersburg water company, is using giant snails, which serve as indicators of potentially harmful pollution from a sewage incinerator on the basis that the snails can pick up air quality readings more readily than the company's instruments. It has also employed crayfish to evaluate the quality of the city's drinking water, The Australian reports.
"Live organisms won't deceive anyone about the danger of pollution," Vodokanal director or wastewater disposal Olga Rublevskaya told the news source. "Now we are under the watch of snails and crayfish all the time."
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