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Read This Before the Next Time You Get Sucked into the 'Hard Science Fiction' Debate

The distinction between “hard science fiction” and “soft science fiction” means many different things to different people—but that doesn’t prevent people from turning it into a status game. Which science fiction has the most real science, or the most serious scientific discussions? Depends whom you ask.

New York's Futuristic Central Vacuum System That Never Was

New York City at the turn of the 20th century was a pretty pungent place. Piles of garbage, millions of people cooking food, and about 2.5 million pounds of horse manure emptied into the streets per day will do that to a city. And don’t forget the 420,000 gallons of horse urine flowing through the streets each week.…

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