New Delhi has the worst air quality of all world capitals, but Friday's reading was extra bad, with the Air Quality Index surging to 451 on a scale of 500.

Several Sikh and Hindu leaders converged on Edmonton City Hall Tuesday worried about Sunday's Diwali amid fears the event would be in jeopardy because Ottawa changed the rules on the use of fireworks.

Reduced visibility due to smog caused at least 20 vehicles to pileup on an expressway near New Delhi leaving several people injured.