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In the skies above Katowice in the heart of Poland's coal industry, Polish officials are deploying the latest weapon against air pollution: drones that inspect the city's chimneys. As soon as one of the unmanned aerial vehicles spots suspicious smoke rising from a rooftop, a second one follows up to "sniff" for pollutants with its chemical sensors. Ground-based operators then send police officers to knock on the door of the offending home to see if they are burning poor quality coal, plastic bottles or some other substance. "Most people decide to pay a fine immediately rather than go to... [Read More]
Стандарты красоты в обществе со временем меняются - это известный факт. Но и наши собственные представления о привлекательной для нас внешности того или иного человека не остаются без изменений - иногда даже в течение нескольких минут. [Read More]