Mr Holmes rigged a fuse between three glass jars filled with a potent chemical mixture that would burn at such a high temperature that it could not be put out with water, he said.

BBC: Batman suspect James Holmes 'set booby-traps' in flat

Last year, the U.S. Department of Veterans Affairs decided that the link between air-borne dioxin (an ingredient in Agent Orange, and also a common air-borne pollutant emitted by waste incineration, some chemical manufacturing processes, cars and trucks, and other industrial sources that burn fuel) and diabetes was so strong, it compensated 270, 000 veterans for diabetes linked to dioxin exposure.

FORBES: Two New Reasons to Worry about Air Pollution: Obesity and Diabetes