Category Archives: Articles

Why Does a Mailbox That is Essentially a Container With a Door Need “Approved by the Postmaster General”?

James I. asks: I was at Lowes and noticed mailboxes say “approved by the postmaster general”. What specifications do a mailbox need to reach to be approved in this way? I mean, it’s a box with a little door and a flag. Are those the requirements? What’s the process here? Thanks! While the United States Postal Service (USPS) and the […]

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Origin of “Penny Wise and Pound Foolish,” and Some of History’s Other Most Insightful Quotes about Money

Andy L. asks: Who first said “penny wise and a pound foolish”? The person credited with coining the phrase, “penny wise and pound foolish,” Robert Burton, also said about writers, “They lard their lean books with the fat of others’ works,” and “We can say nothing but what hath been said.” So, with Robert Burton’s insight in mind, here’s a […]

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How Do Clams Reproduce?

F. Whisten asks: Is it true that all clams are male? If so, how do they reproduce? Encased in a hard shell, brainless and possessing only a single limb (a retractable foot that looks like a tongue), clams seem like a species for which reproduction would be difficult. And yet, each year, millions of clams are born – thanks in […]

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The United States v. Paramount and How Movie Theater Concessions Got So Expensive

Walter K. asks: Why are movie theaters allowed to make their concessions so expensive? In 1948, the Supreme Court ended the stranglehold Hollywood studios and distributors had on the U.S. movie market. Declaring the big eight a monopoly and ordering them to divest of their ownership of movie theaters and cease other non-competitive practices, with U.S. v. Paramount Pictures, et […]

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Why Sugar Doesn’t Spoil

Mark U. asks: Why doesn’t sugar ever seem to go bad? Two foods are left out on the counter – fresh tomatoes and a bowl of sugar. Within a week or so, one will develop black spots and the other remains pristine, albeit perhaps a little clumpy depending on the humidity of the air. The reason? Osmosis. While microorganisms love […]

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Weekly Wrap Volume 64

This is a weekly wrap of our popular Daily Knowledge Newsletter. You can get that newsletter for free here. Terrifying Fluffy Bunnies and The Little Albert Experiment The Little Albert Experiment was a study conducted back in 1920 by famed psychologist, “the father of behaviorism”, John B. Watson. It essentially involved conditioning a baby, identified only as “Albert. B” to […]

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Does Canadian Beer Really Contain More Alcohol Than Beer Made in the United States?

Paul E. asks: Is it true that Canadian beer has a lot more alcohol in it than American beer? Canadians boast longer lives, safer communities, free nationalized healthcare, a cleaner environment, the most gold medals in Olympic hockey, and, of course, poutine. But, contrary to popular belief, one thing they don’t do any different than their friends to the south […]

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