Did you know that if you made the equator into a physical line on the Earth, assume the earth was smooth and the equator touched the Earth's surface. If you cut the equator-string and attached exactly 1 meter string then suspended the string evenly (creating an even gap) above the Earth's surface, that gap would be about 16 centimeters.

It's true, work it out if you know the math.

I think that's pretty cool!