Report: U.S. Air Pollution Is Getting Worse

A report by Carnegie Mellon University reveals a 24% drop in fine particulate matter from 2009 to 2016, but a 5.5% increase since then, leading to 10,000 premature deaths in 2018. Factors include economic activity, natural gas use, increased driving, and wildfires, particularly in California. A decline in Clean Air Act enforcement since 2013 is noted, with no increase in actions despite worsening pollution in 2017-2018. Researchers call for better data to understand air quality changes.

What was the percentage increase in fine particulate matter concentrations after 2016?

• 5.5%

• 3.5%

• 9.5%

• 7.5%

Which factor is NOT mentioned as a reason for the recent drop in air quality?

• Increased economic activity

• Rise in natural gas use

• Increase in wildfires

• Decrease in industrial production

What percentage of the 10,000 premature deaths in 2018 were estimated to occur in California due to wildfires?

• 43%

• 23%

• 33%

• 53%

When did the enforcement of the Clean Air Act begin to decline?

• 2010

• 2015

• 2017

• 2013

What do researchers say is needed to better understand the causes and effects of declining air quality?

• More funding

• Better data

• Stricter laws

• Public awareness