NEW DELHI -- Forty years ago, the Indian city of Bhopal became the site of a disaster that has been called the worst industrial accident in history.
Activists continue to fight for victims of gas leak and call for greater industrial safety

Methyl isocyanate, the gas released in Bhopal, burns the tissues of the eyes and lungs, and crosses into the bloodstream to damage almost every system in the body. (Photo by Getty Images)
NEW DELHI -- Forty years ago, the Indian city of Bhopal became the site of a disaster that has been called the worst industrial accident in history.