ClassX Video Lessons Youtube Channel Mystery Science

Category: Mystery Science

What’s the longest anyone’s ever stayed awake?

Read Now →

Who invented school?

Read Now →

How are video games made?

Read Now →

How were LEGO bricks invented?

Read Now →

What’s the fastest baseball ever thrown?

Read Now →

Why don’t people eat ostrich eggs?

Read Now →

How did people clean their teeth before toothpaste was invented?

Read Now →

Are mermaids real?

Read Now →

Can any animal outrun a cheetah?

Read Now →

What do garbage trucks do with garbage?

Read Now →