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20 strange scientific facts

The Lists Norml Team

5 min read · Jun 01, 2026

Welcome to our deep dive into 20 strange scientific facts. This comprehensive guide covers the essential aspects and latest developments within the field.

20 strange scientific facts has recently sparked huge interest in digital communities. Our automated engine has curated the most relevant insights to provide you with a high-level overview.

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Feb 26, 2026 · Why do URLs have those weird percent signs? Here's everything you need to know about URL encoding -- common characters, language-specific functions, and the mistakes that break …

URL encoding normally replaces a space with a plus (+) sign or with %20. If you click the "Submit" button below, the browser will URL encode the input before it is sent to the server. A page at the …

Oct 27, 2009 · For HTTP URLs, a space in a path fragment part has to be encoded to "%20" (not, absolutely not "+"), while the "+" character in the path fragment part can be left unencoded.

Percent-encoding is used to ensure special characters do not interfere with the URI's structure and interpretation. Special characters are replaced with a percent sign (%) followed by two hexadecimal …

Example One of the most common special characters is a white space. You can't type a space in a URL directly. A space position in the character set is 20 hexadecimals. So you can use %20 in place of a …

Apr 7, 2026 · Why do URLs contain %20 or %E4%B8%AD? This article explains percent-encoding from first principles, clarifies the difference between encodeURI and encodeURIComponent, and covers …

Apr 27, 2026 · Spaces are the single most common source of URL encoding confusion because there are two valid encodings for them, used in different contexts: %20 is the standard percent-encoding …