Caitlin Olson 10/16/26 Caitlin Olson 10/16/26

Why are blood pressure and tire pressure measured differently?

The history is quite mercurial.

Caitlin Olson 6/4/26 Caitlin Olson 6/4/26

How does a thermos work?

It's getting (and staying) hot in here

Caitlin Olson 4/16/26 Caitlin Olson 4/16/26

How do QR codes work?

I'll explain in a little bit.

Caitlin Olson 4/9/26 Caitlin Olson 4/9/26

How do contact lenses work?

Hmm... Let's see...

Caitlin Olson 2/26/26 Caitlin Olson 2/26/26

How do record players work?

Turntable? More like learn-table.

Caitlin Olson 2/8/26 Caitlin Olson 2/8/26

How does the power grid work?

And no, you don’t need to be an electrical engineer to get the gist.

Caitlin Olson 2/7/26 Caitlin Olson 2/7/26

What made old Nokia phones nearly indestructible?

🎵 Da-na-da-na, da-na-na-na, da-na-da-na-na 🎵

Caitlin Olson 2/7/26 Caitlin Olson 2/7/26

How should you charge your devices to maximize battery life?

Don’t overheat, try to keep it between 20-80%, and avoid knockoff chargers.

Caitlin Olson 2/7/26 Caitlin Olson 2/7/26

How does your phone track steps?

I’ll walk you through it step-by-step.

Caitlin Olson 2/5/26 Caitlin Olson 2/5/26

How do court reporters type so fast?

Stenographers can type at an 360 words per minute, with an accuracy rate of 99.8%.

Caitlin Olson 1/22/26 Caitlin Olson 1/22/26

Who decides which emojis get made?

👥🎨 ➡️ 🧑‍⚖️📝 ➡️ 📲🌍

Caitlin Olson 1/8/26 Caitlin Olson 1/8/26

How do cruise ships turn around?

Bow down to ship innovation

Caitlin Olson 12/26/25 Caitlin Olson 12/26/25

How is plastic being removed from the ocean?

It's pretty plast-uck (but we're working on it)

Caitlin Olson 11/6/25 Caitlin Olson 11/6/25

Why do cranes have flags on them?

Lifting heavy objects (and national pride)

Caitlin Olson 9/4/25 Caitlin Olson 9/4/25

Where does trash go?

Nothing but trash talk in this one

Caitlin Olson 5/8/25 Caitlin Olson 5/8/25

Can we build full-size buildings using LEGO-like bricks?

The ultimate LEGO expansion pack

Caitlin Olson 4/24/25 Caitlin Olson 4/24/25

How will 3D printing organs work?

This ain’t your grandma's HP printer

Caitlin Olson 4/3/25 Caitlin Olson 4/3/25

How do laser pointers work?

Your dog or cat may be wondering...

Caitlin Olson 10/10/24 Caitlin Olson 10/10/24

How do noise-cancelling headphones work?

Let's make some noise for noise cancellation

Caitlin Olson 9/14/24 Caitlin Olson 9/14/24

Why does electricity make noise?

Discover the electrifying reason why AC/DC isn't just a legendary rock band.