mr. driessen?> guest: one of the hard things to gauge in all of this is what is the difference between the effect that rachel carson had as an individual, her book had as a book and then the environmental groups especially after her death, what they did to campaign against ddt first and foremost but also other pesticides and chemicals. and that is where a lot of the what linda was talking about where the misinformation came in, rachel carson didn't call for the elimination but she did take some of her speculation beyond where the science back it up. she, for example talked about the ddt as something building huge resistance in insects at an early time when she was really talking about mosquitos for example avoiding it much as they do deet, off four other republics. that is ddt's most prominent role. it doesn't compare to what we have today that time it was the best we had and we used it profitably as linda pointed out. but it's also the most powerful appellant that has ever been developed, the most

mr. danner will be signing books up at the front hear. >> paul driessen congress of racial equality seniorw and linda lear who wrote the introduction to the 40th anniversary edition discussed silent spring, written by scientist rachel carson. the program is an hour. >> host: paul driessen, who was rachel carson? >> guest: rachel carson was a scientist for fish and wildlife service department of the interior. she was an author. she was a gifted writer. i read silent spring when i was in college and read the sea around us and they captivated me. she is ms murray sing writer and she is able to take scientific, dry scientific information and put it in vibrant colorful words that captivate you. >> host: what was she well-known before silent spring came out in 1952? guest though she had the sea around us, which was a pretty big seller. that is what got me interested in marine biology and scuba diving and things like that. >> host: that was published in the 50s? >> guest: i believe so. i should have checked before i came on but i'm quite sure of that. >> host: what was the impact of silent spring