The sharpest object in the world is not a knife or razor blade. It's a tiny, needle-like tip made of a single carbon atom. But this incredible tool is not used to cut things. Instead, it's used to do something you may not have thought was possible.

Over on my Instagram page, I share photos of my life. I keep my profile private, but I'll add you!

Spotify is one of the world's largest music streaming services with almost a quarter billion active users. And if you have ever used Spotify, you know it is impressive how well the app can get to know your music preferences. How does this software work? Through extremely complex math, of course.

Humans have long looked up in space and thought about how we could live among the stars one day. Right now, life on Mars would require a ton of equipment and shelter to protect us from the harsh environment. But what if we could make Mars more like Earth? How would we even do that? The answer is lasers!

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?

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