Word: conceptions
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Dates: during 1980-1989
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There has, I think, been a great deal of misunderstanding of the concept of non-violent protest. I consider myself a liberal and an activist might be taken more seriously by liberals and activists than if a member of the club enunciated them, I wish in particular, to refer to a recent meeting of that club, at which a representative of the South African government spoke and to the recent occupation of the Harvard Cooperation of fices...
Though the concept behind Songwriter has been kicking around since 1978, the movie never seems labored. Written by Nelson's good friend, novelist-screenwriter Shrake, the script freely betrays a real family and its affection for the musicians and the on-the-road-again way of life. Songwriter gives a taste of Austin, spirited style and music, along with a playful, rambunctious storyline. It is an avant-garde film of seething social commentary, Songwriter offers an example of smooth-talking Texan optimism...
Whether these catastrophic impacts are random or cyclic remains to be seen. But if they occur at all, they could shake the foundations of evolutionary biology and call into question the current concept of natural selection. Should the Alvarez theory be correct, says Harvard Paleontologist Stephen Jay Gould, the importance of competition between species diminishes. If every so often a megablast opens up a broad array of ecological niches, then new creatures can flourish without having to crowd out the old. "If you ask the question, 'Why are we here?' " says Gould, "the answer is, 'Because the dinosaurs disappeared...
...theory is correct, the next catastrophe will not occur for at least 13 million years. But the effect of the new concept on science and scientists has been much more immediate. One measure is the ferocity of debate it has generated in the past few months among eminent researchers, at conferences and in the letters-to-the-editor columns of major newspapers and staid journals alike. Supporters of the Milky Way proposal dismiss the Nemesis notion as "unlikely" and "ad hoc," and death star advocates are scornful of the galactic concept. Many consider all the newfangled extraterrestrial scenarios...
...land animals highest on the food chain, the dinosaurs. Eventually the iridium-enriched debris, circulating around the world in the atmosphere, would have settled like a sprinkling of black snow over much of the globe. (It was the Alvarezes' theory that helped to shape the now familiar concept of nuclear winter...