From the brains behind brains on, this is The Moment of Um.

Um, um, um, um, um, um, um, um, moment of um comes to you from APM studios. I'm Mark Sanchez.

Um.

Oh, man, the Brains on Zoom rays still on the fritz. I don't get it. I downloaded the newest update.

I polished all the lenses.

I even swapped out the part that makes the cool Zoom Zoom sound effect.

So why isn't this working?

And right when I was supposed to go germ spotting with sand and I had my list already with all the microbes I wanted to see.

First, I was going to look at my yogurt cup to see all the lactobacillus bacteria.

They helped turn milk into a delicious tangy treat.

Then I was going to check out the awesome bacteria on the bottom of Sandin's shoe

and inside my dog Ella's mouth.

Well, I guess the germ spotting will have to wait.

Unless, what if I looked for a lot of bacteria, all hanging out in the same spot?

Sure, they're teeny tiny, incey, beincy living things, but what if they all clumped together?

Would there be enough for me to see them with just my eyeballs?

My buddy Nico was just asking me about this.

Hi, my name is Nico, and I'm from Gainesville, Florida.

My question is, how many germs would have to clump together to be seen without a microscope?

You'd really need probably closer to millions to make a visible dot.

My name is Daniel Bond. I'm a professor of microbiology at the University of Minnesota.

Most bacteria are so small, you would need to line up at least a thousand you'd need thousands of

...