Today and Tomorrow and ... [32 essays]

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Collection of essays: What Do You Call a Platypus? The Rhythm of Day and Night The Sun Vanishes The Flying Mountains The Romance of Mars Knowledge is Anywhere Earth Air Water Fire Space Time Mass You Can't Even Break Even The Secret of the Squid How Many Inches in a Mile? Beyond the Ultimate The Lunar Landing After Apollo, What? No Space for Women? Future Fun Personal Flight Freedom at Last The Age of the Computer The End The End, Unless ... The Fourth Revolution The Perfect Machine Prediction As a Side Effect The Serious Side of Science Fiction A Literature of Ideas The Scientists' Responsibility