Just what caused the dinosaurs’ extinction?
The scientists had been arguing for half a century over the nature of the K-T Event. Some said a comet or a planetoid hit the Earth; others, that one or more of those big super-volcanoes, like the one that mad your Yellowstone Park, cut loose with an eruption that blanketed the Earth with ash and smoke.

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  1. “The Big Splash” by L. Sprague de Camp, in Asimov’s Science Fiction, June 1992.
  2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . written by L. Sprague de Camp