... the first 2 million years of our history the human population had very little effect upon the overall world ecosystem, with no more than 10 million members. In the New Stone Age, less than 10,000 years ago, the number of ... .(Grolier Encyclopedia) If the 14th century had our present day medicine or technology, this catasophy would have been unheard of. Triumph over disease on a worldwide scale did not come until 20th century with the introduction of antibiotics and DDT. DDT is a very ... not only produces vegetation but also as well they make meat for us, like chickens, cows and pigs. ...

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