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Trees saving 850 human lives a year in US: Study Washington: Trees are saving more than 850 human lives a year and preventing almost 670,000 incidences of acute respiratory symptoms, says an estimate of air pollution removal by trees in the US by the US Forest Service scientists and collaborators. While the pollution removal by trees equated to an average air quality improvement of less than 1 percent, the impacts of that improvement were substantial. Researchers valued the human health effects of the reduced air pollution at nearly $7 billion (Rs.42,000 crore) every year. "With more than 80 percent of Americans living in urban area, this research underscores how truly essential urban forests are to people across the nation," said Michael Rains, director Northern Research Station, US Forest Service.The study considered four pollutants for which the US Environmental Protection Agency (EPA) has established air quality standards: nitrogen dioxide, ozone, sulfur dioxide, and pa...
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