Accordion

An accordion

Turns out, there’s quite a bit of gold on—or, really, in—our planet: 99 percent of the precious metal can be found in the Earth’s core, Discover Magazine reports. How much is there? Enough to coat the entire surface of the Earth in 1.5 feet of gold.

Elon musk

In school, we were taught that most (specifically, 71 percent) of the planet’s surface is covered in water. While that’s true, humans can use only 0.007 percent of that water, according to National Geographic. That’s because only about 2.5 percent of Earth’s water is fresh water, and only 1 percent of that is accessible. The rest makes up glaciers and snowfields.

Answer

And another accordion…

Spanning 2,340 miles, the Mississippi River is the third-largest watershed in the world. That’s one long stretch of water. So long, in fact, that it takes one drop of water approximately 90 days to travel its entire length.

Japan is thought to have one of the highest densities of vending machines in the world, with one for every 40 people in the country. While most sell various types of beverages, others feature ice cream, noodles, and disposable cameras.

Can you guess the answer to this random fun fact? You’ll find a Z (Arizona), a J (New Jersey), and even two X’s (New Mexico and Texas)—but not a single Q.

A.