A thick blanket of smog shrouded India's capital New Delhi on Monday,
as firecrackers smoke added to the already-high pollution levels
during Diwali celebrations.
The air quality index reached a severe level and posed significant health risks.
Visibility deteriorated as a gray haze blanketed streets and buildings.
India's Supreme Court in October had sought to limit Diwali pollution
by restricting conventional firecrackers, allowing only "green firecrackers"
to be lit for a three-hour window last weekend.
While these new firecrackers produced fewer emissions, they still released
particulates and other pollutants, adding to the city's already hazadous air.
Environmentalists want longer-term solutions, such as cleaner energy
and stricter vehicular emissions control.