The people of Bhopal, particularly the poor neighborhoods near the pesticide factory, were hurt by a lethal leak of methyl isocyanate, a chemical used in the manufacture of pesticides.

Aside from the government bureaucracy, its principal industry was the old, and increasingly obsolete, pesticide factory at the outskirts of town.

That was a pesticide factory they were operating.

That city, a mere 50 miles away, was the scene this spring of one of China's biggest riots, in which more than 10,000 residents routed the police in a riot over pollution from a pesticide factory.

"Nature's pesticide factories" - the fruits and vegetables consumed by humans and other animals - do not discharge thousands of tons of hazardous chemical waste annually.

A pesticide factory in Mexico, a supermarket in Germany that refused to remove genetically modified foods from its shelves .

When any pesticide factory can be turned to chemical weapons production, is complete verification achievable?

In December 2010, an explosion caused by careless handling of chemicals ripped through a pesticide factory, raising pollution fears that resulted in authorities evacuating 8,000 residents from nearby villages.

In December 1984 a lethal gas escaped from a pesticide factory in Bhopal, causing the death of some 2,500 people and leaving 50,000 temporarily disabled.

The new strain is the first to produce two toxins at once, making it a potentially more convenient pesticide factory.