Search Results for: invention of can opener

The Can Opener Wasn’t Invented Until 48 Years After the Invention of the Can

Today I found out the can opener wasn’t invented until 48 years after the invention of the can. In 1795, Napoleon Bonaparte was having problems with his supply lines. Specifically, they were too long for the food preservation methods at the time, making it difficult to adequately supply his troops with needed food. Thus, he offered a 12,000 franc prize […]

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How Did the Ancient Romans Manage to Build Perfectly Straight, Ultra Durable Roads?

Marbleezy asks: How did the ancient Romans manage to build perfectly straight roads hundreds of miles long? The ancient Romans were a people famed for their architectural prowess, something no better demonstrated than by their ability to build almost perfectly straight and incredibly durable roads spanning expansive distances. For example, in Britain alone, the Romans built well over 50,000 miles […]

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Who Started the Flat Earth Conspiracy Theory, How Many Actually Believe This, and What Do They Believe Exactly?

Contrary to popular belief, a decent percentage of the human population has known definitely the Earth was roughly spherical for over two thousand years. Hardly impressive, as noted in our BrainFood Show podcast, bees also use this fact in their own absurdly fascinating navigation and in communicating directions to other bees. As for humans, we took a little longer to […]

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Weekly Wrap Volume 135

This is a weekly wrap of our popular Daily Knowledge Newsletter. You can get that newsletter for free here. The Curious Case of the Pillownauts Today we take it for granted that astronauts can function in the weightlessness of spaceflight, but at the dawn of the space age in the early 1960s, scientists weren’t sure that was possible. Some experts […]

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The Story of Pasteurization and How It Changed the World

In the mid-19th century, French scientist Louis Pasteur made a discovery that has reverberated through the ages. Perhaps working at the behest of Emperor Napoleon to figure out why wine and beer sometimes soured during fermentation, he found out that this was due to unwanted microorganisms, or “germs,” converting the alcohol into acetic acid. This produced the sour or vinegary […]

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Who Invented the Vacuum Cleaner?

In central Missouri, about hundred miles from St. Louis and right off of Route 66, sits the small town of St. James. Despite this town having only about four thousand people, it is proudly the location for the Tacony Corporation’s vacuum cleaner factory, a giant facility that produces cleaners for 13 different lines and brands, including for Maytag, Riccar, and […]

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