pesticide, a molecule looks like this. it is essentially a nerve agent in the same class of chemicals as sarin gas. it can cause nausea and dizziness and confusion. in high doses it can cause vomiting, convulsion, respiratory arrest, even death. the people who make this pesticide say that a normal low level doses it s perfectly safe. some agricultural experts say the science is not conclusive. part of why it is a so hard to draw a conclusion is this pesticide is too toxic to be tested on humans. it s already banned from most household uses. by core pyrophos is on u.s. farms. farms use it on dozens of different crops. a few years ago the epa decided to study whether it was still safe to dump all that pesticide into the air and onto our food. and what the epa found was kind of alarming. they looked at the research that was done at columbia university, and this was the headline from