Here Are All of the US Presidents Ranked By Their IQ

James Madison

Coming in sixth place, we have none other than the fourth president of the United States of America, James Madison. This president was a polarizing one, but at the time, he didn't have much modern influence over the people. When he was president, America was practically the wild west.

The More You Know

There's a "floating rainforest" in the sea.
Armadillos swallow air to become buoyant when they swim.
Donkeys and dolphins are sometimes used as guard animals.
T-shirts were originally made for unmarried men who didn't know how to sew buttons on collared shirts.

Post originally appeared on Upbeat News.