Have you ever lost a bag at the airport? Maybe it took a joyride to McDonald's. Plus, this streaming mistake endangers your computer, a safety tip for dating apps, how a stalker's own AirTags thwarted him, how to edit a PDF on your iPhone and a weird way to make money.

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Every airport has its own specific three-letter code. Phoenix Sky Harbor Airport is PHX, for example, and Denver International Airport is DEN. It turns out that the way these codes are assigned is much more complicated than just abbreviating the city or state. If you fly to Montreal, Canada the call sign is YUL. Why is this and how does the system work?

When you look at a globe, you see horizontal and vertical lines crisscrossing the entire sphere. Those are latitude and longitude lines and they have helped us explore the Earth over the last 500 years. In this video, you'll learn how to find your own latitude and longitude at home without using Google. Cool!

During World War II, the island of Britain was under constant attack from the Germans. But the British had an incredible weapon to fight back with: the Spitfire. This iconic plane could climb to high altitudes quickly, outpace the German planes and stop many attacks. It couldn't have done this without some mind-blowing engineering. So how did they do it?

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