“When a scientist in good repute, like Dr. Lee Du Bridge, can defend the wholesale immediate use of pesticides, bactericides, and possibly equally dangerous pharmaceuticals, by saying that it would take ten years to test them sufficiently to certify their value and innocuousness and that "industry cannot wait"-it is obvious that his rational commitments to science are secondary to financial pressures, and that the safeguarding of human life is for industry not a matter of major concern.”