Saturn’s density is so low that it would float in water — if there were a tub big enough.

The average person walks the equivalent of three times around the Earth in a lifetime.

Some fish can recognize themselves in mirrors — like humans and dolphins.

The inventor of Pringles is buried in a Pringles can.

An octopus has nine brains — one central and one for each arm.

Human bones are stronger than steel of the same density.

Venus rotates in the opposite direction of most planets.

The inventor of the microwave oven only discovered it after a chocolate bar melted in his pocket during radar testing.

Your stomach gets a new lining every 3–4 days to avoid digesting itself.

The word “muscle” comes from the Latin for “little mouse,” because ancient Romans thought flexing muscles looked like mice under the skin.