Beijing announces “yellow warning” on heavily polluted air

“Yellow warning” implies reduced outdoor activities and health protection. It is a level 2 warning which can be aggravated to “orange” or “red” alerts.

Science and Technology Daily, February 20, 2103

Most popular posts:

This website stores cookies on your computer. These cookies are used to provide a more personalized experience and to track your whereabouts around our website in compliance with the European General Data Protection Regulation. If you decide to to opt-out of any future tracking, a cookie will be setup in your browser to remember this choice for one year.

Accept or Deny