Ballpark — June 8, 2026

Total length of the Amazon River

4,000 miles

There is a long-standing debate if it's longer than the Nile.

About how many hours per day does an average cat sleep?

~15 hours/day

Cats are champion sleepers—often 12–16 hours a day.

About how much potassium is in an average banana?

~420 mg

A medium banana has a bit over 400 mg of potassium.

Moons Earth has

1 moon

The Moon is about 1/4 the diameter of Earth.

Percentage of the world that is left-handed

~10%

This ratio has remained consistent across cultures for centuries.