Word: environmental
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Dates: during 1970-1979
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(4) Types of natural selection. When an organism grows continuously in a relatively constant environment natural selection has a stabilizing effect, weeding out the variants that deviate too far in any direction from the well adapted norm. But when the environment is changed the same basic process of natural selection...
This effect of the environment in the gut on the normal flora is readily recognized. For example, when breast feeding is replaced by solid food the character of the stool changes dramatically, as lactic acid bacteria (which produce sweet-smelling products) are replaced by E. coli and other foul organisms...
...black-lung disease and the continuing mine disasters do not impress anyone, the ever increasing oil tanker spills [Jan. 10] have established themselves as a great environmental tragedy. Sooner or later we have to realize that under well-controlled conditions, atomic fuel is environmentally the most acceptable source of energy today. Any further reliance on the present "supertanker mentality" is not only dangerous to the environment but, from the national security standpoint, foolhardy. James Scott, M.D. Streator...
Something may be moving to focus better the human dimensions of our society so as to erase barriers of birth and environment. For long, the struggle was about material needs. That is still the struggle in important ways. But the biggest battles of want have been won. Maybe Jimmy Carter...
It was like living in the Arctic-an ominous reminder of how modern man, so proud of his technological mastery of his environment, remains so vulnerable to its whims. Indeed, his very reliance on energy-consuming machines, vehicles and conveniences contributed last week to widespread suffering. To meet soaring energy...