This Is What It Would Look Like If You Piled Up Every Living Human

Spoiler: the world is surprisingly big. Or humans are surprisingly small.

Here's a representation of everyone in the world stacked up in the Grand Canyon.

Via youtube.com

The GIF comes from this excellent VSauce video, in which he tries to work out how many things there are.

youtube.com

And has a really solid stab at it.

H/T Sploid.