• A teaspoon of concentrated household dust mite allergen was once thought to be more lethal than a teaspoon of cobra venom.

• Of all the salt mined and otherwise produced in the world, the percentage used for culinary and dining purposes is less than ten percent.

• The least popular color in a 64 count box of Crayola crayons is violet.

• If the world's oceans were evaporated and all the salt in them evenly distributed across the planet, it would coat the entire surface to a depth of 24 feet.

• The British Shorthair is the only type of cat that can be taught how to play the piano.