How do zebras get their stripes? How do leopards get their spots? And how do giraffes get their giraffe-shaped thingies, whatever they are called? Would you believe the answer is… math? This is the story of a WWII wartime codebreaker and...

Hank and Phil Plait dive deep into questions about gametes and sea mammals in this episode of SciShow Quiz Show!

Learn about the Navajo Code Talkers, who served valiantly during World War II.

What if you don't trust a single authentication method, such as a username and password pair? Then you can use multi-factor authentication, which is presented in this video.

People have been using codes throughout history to keep their messages private and my two little spies needed a way to sent their secret messages to each other too. So I came up with this simple paper plate decoder for them to have fun.

Across the globe, queer communities have relied on secret lexicons known as "argots" to communicate safely, which have developed over the years into what some call "verbal jazz."

Pioneered in the 1950s by musicians breaking the rules of jazz and composition, free improvisation is still as difficult – and potentially transcendent – as it ever was. A Guardian documentary takes you inside its world, talking to...

In this episode we examine the topic: The Origins of the Jesus Fish

There are a couple good use case scenarios for making a secret knock detector using an Arduino.

This video shows how to perform identification. This clip is from the chapter "Securing Transmission Control Protocol/Internet Protocol (TCP/IP)" of the series "CompTIA Network+ Certification N10-007: The Total Course".In this section,...

This video explains the multi-factor authentication process.
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This clip is from the chapter "Solutions Architect Chapter 7 - Identity and Access Management (IAM)" of the series "AWS Solutions Architect Associate (SAA-C02)...

English pronunciation lesson showing the difference between theS and SH sounds. Includes tongue twister and interactive game for practice.