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Air pollution causes some 8.8 million deaths annually ... we've compiled some of the most beautiful — and heartbreaking — images of our planet and its flora and fauna. Here are 30 images ...

This comes days after some cities in Pakistan logged record-breaking pollution levels with the Air Quality Index (AQI) ...

Air pollution in the city has hit the severe plus category with several parts recording a 1,000 above Air Quality Index (AQI). Right now, stepping out in the Delhi air is equal to smoking 33 ...