Thirty years ago, the Bhopal disaster, also referred to as the Bhopal gas tragedy, was a gas leak incident on the night of 2–3 December 1984 at the Union Carbide India Limited (UCIL) pesticide plant in Bhopal, Madhya Pradesh, India.

The pesticide plant was surrounded by shanty towns, leading to more than 600,000 people being exposed to the deadly gas cloud that night.Estimates of the death toll vary from as few as 3,800 to as many as 16,000, but government figures now refer to an estimate of 15,000 killed over the years.

The gases stayed low to the ground, causing victims throats and eyes to burn, inducing nausea, and many deaths.

Human rights groups say that thousands of tons of hazardous waste remain buried underground, and the government has conceded the area is contaminated.

Click for Video