Firecarcker

As India celebrates Diwali this week, scientists fear a ban on sale of firecrackers and other emergency anti-pollution measures deployed by authorities may not be enough to prevent a repeat of last year's "airpocalypse" in Delhi.

As India celebrates Diwali this week, scientists fear a ban on sale of firecrackers and other emergency anti-pollution measures deployed by authorities may not be enough to prevent a repeat of last year's "airpocalypse" in Delhi.