Abstract

A random sampling of North American, British, and German paleontologists, North American geophysicists, and Polish geoscientists was made in mid-1984 to determine attitudes toward the hypothesis that an extraterrestrial impact caused mass extinctions at the Cretaceous/Tertiary boundary. The attitudes differ widely not only within but also between these scientific communities, thus raising the question of significance of the cultural and educational background in development of scientific opinions.

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