Ozone pollution costs Asia billions in lost crops: study

"Air pollution control in North America and Europe succeeded in lowering ozone levels," said Kazuhiko Kobayashi

It would be interesting to know which regulations or other measures we are talking about here.

Maybe point the spotlight on the world's number one polluters.

The principle ingredient in smog is ozone. The main producer of smog in the world is China. Is it any wonder that China, and the countries near China, suffer from some of the worst smog, and ozone exposure, in the world?

It would be interesting to know which regulations or other measures we are talking about here.

Auto and truck emissions regulations.