Additional reporting by Katherine Harmon, Live Science Contributor
The US EPA estimates that a proposed set of changes in diesel engine technology ( Tier 2 ) could result in 12,000 fewer premature mortalities , 15,000 fewer heart attacks , 6,000 fewer emergency room visits by children with asthma, and 8,900 fewer respiratory-related hospital admissions each year in the United States. 
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One of the major requirements of students like you is to write an essay on a given topic. Essays are part of the English syllabus, and it is generally a task
Besides this, CPCB has an automatic monitoring station at ITO Intersection in New Delhi. At this station Resirable Suspended Particulate Matter (RSPM), Carbon Monoxide (CO), Ozone (O3), Sulphur Dioxide (SO2), Nitrogen Dioxide (NO2) and Suspended Particulate Matter (SPM) are being monitored regularly. This information on Air Quality at ITO is updated every week.