In New Delhi, burning season makes the air even more dangerous. Can anything be done?

Coronavirus lockdown brought respite from the intense pollution, but it's back with the winter smog, though stubble burning isn’t the whole problem.

A smoggy morning near Pragati Maidan in New Delhi, India, shrouds vertical gardens on the Delhi Metro pillars. The foliage is supposed to, in part, mitigate pollution, which gets worse in the winter season as farmers burn their fields.

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