No matter its size or thickness, no piece of paper can be folded in half more than 7 times.
Cheetah's can accelerate from 0 to 70 km/h in 3 seconds.
The McCoy Federal Building in Jackson is the first federal building in the U.S. named for an African American.
Absolutely pure gold is so soft that it can be moulded with the hands.
The elephant is the only animal with four knees.
There are more people in New York City (7,895,563) than there are in the states of Alaska, Vermont, Wyoming, South Dakota, New Hampshire, Nevada, Idaho, Utah, Hawaii, Delaware, and New Mexico combined.
On average, our bodies constantly resist an atmospheric pressure of about 1 kilogram per square inch.
The lightest organ in the human body is the lung.
Nine out of every 10 living things live in the ocean.
The largest cave in the world (the Sarawak Chamber in Malaysia) is 2,300 feet (701 meters) long, 980 feet (299 meters) wide, and more than 230 feet (70 meters) high.