Talk about a bizarre feature of the human body: If you happened to swallow a razor blade, your stomach acid would dissolve it. Acids are ranked on a scale from zero to 14—the lower the pH level, the ...

Here’s an intriguing quirk of the human body that may change how you think about your height: you’re typically a little taller in the morning than you are by the end of the day.

Look, the truth is, everyone has knowledge gaps. Some of them might be super niche. Others might be more general and embarrassing to admit to. But no matter how well-read and educated you are, there ...

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