Pollution has driven some families to leave Beijing. A group of Chinese lawyers is suing the governments of Beijing and its surrounding areas for not doing enough to get rid of the smog. Andy Wong/AP hide caption

toggle caption
Andy Wong/AP

For Some In China's Middle Class, Pollution Is Spurring Action

  • Download
  • <iframe src="https://www.npr.org/player/embed/518173670/518956977" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

California is looking into ways to reduce the use of gas-powered lawn and gardening equipment because they will soon surpass cars as the biggest polluters in the state. stoncelli/Getty Images/iStockphoto hide caption

toggle caption
stoncelli/Getty Images/iStockphoto

California Weighs Tougher Emissions Rules For Gas-Powered Garden Equipment

  • Download
  • <iframe src="https://www.npr.org/player/embed/517576431/517779814" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Some environmental justice advocates say California's cap-and-trade program hasn't done anything to clean up the air in low-income communities like Wilmington, where refineries are located near residential neighborhoods. Maya Sugarman/KPCC hide caption

toggle caption
Maya Sugarman/KPCC

Environmental Groups Say California's Climate Program Has Not Helped Them

  • Download
  • <iframe src="https://www.npr.org/player/embed/515379885/518743130" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

William Ruckelshaus is sworn in as administrator of the new Environmental Protection Agency as President Richard Nixon looks on at the White House on Dec. 4, 1970. Charles Tasnadi/AP hide caption

toggle caption
Charles Tasnadi/AP

How The EPA Became A Victim Of Its Own Success

  • Download
  • <iframe src="https://www.npr.org/player/embed/515748401/515753176" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Face masks were placed on stone monkeys at the Beijing Zoo on Dec. 19 to protest heavy air pollution in northeast China. A week earlier, riot police cracked down after artists put similar masks on human figures in Chengdu. STR/AFP/Getty Images hide caption

toggle caption
STR/AFP/Getty Images

People wearing protective masks walk near the iconic headquarters of Chinese state broadcaster Central China Television in Beijing, which has been blanketed by heavy smog. Andy Wong/AP hide caption

toggle caption
Andy Wong/AP

Buildings are seen shrouded in smog from the 102nd floor of Seoul's Lotte World Tower in December 2015. Bloomberg via Getty Images hide caption

toggle caption
Bloomberg via Getty Images

Korea's Air Is Dirty, But It's Not All Close-Neighbor China's Fault

  • Download
  • <iframe src="https://www.npr.org/player/embed/478796463/480564770" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Dr. Gita Prakash (left), who runs a family clinic from her home in New Delhi, examines 10-year-old Sonu Kumar Chaudhary as his father, restaurant deliveryman Dilip Kumar Chaudhary, looks on. Prakash sees more and more cases of illness caused by the city's polluted air. David Gilkey/NPR hide caption

toggle caption
David Gilkey/NPR

India's Big Battle: Development Vs. Pollution

  • Download
  • <iframe src="https://www.npr.org/player/embed/477930821/477979805" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

After the pigeons are fitted with pollution sensors, they are released into different parts of London. Londoners can then get live air quality readings via Twitter. Rich Preston/NPR hide caption

toggle caption
Rich Preston/NPR

Pigeons Are London's Newest Pollution Fighters

  • Download
  • <iframe src="https://www.npr.org/player/embed/470809358/470861417" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript