of all it's interesting what you said about silent spring because initially the publisher and mitchell kirsten decided not to publish it in communist countries because they were worried of getting her labeled as a communist by the chemical industry so politically that's an interesting thing but you're right so what happened with the publication of silence spring is people realize the environmental cause consequences and and health consequences of these pesticides particularly the class of organic chlorine pesticides that d.d.t. belongs to and during world war 2 another major class of insecticides are going to phosphate insecticides were developed by nazi scientists name shrader those pesticides were also very effective in killing insects they have the advantage of breaking down in the environment much faster typically weeks to months rather than years to decades but the disadvantage of being actually more toxic to handle and so what we ended up doing is making the consumer safer because you have less pesticide residue residues on our food but we've traded off consumer safety for firm worker sa