Mary Roach Quotes
Chew on this: Human teeth can detect a grain of sand or grit 10 microns in diameter. A micron is 1/25,000 of an inch. If you shrank a Coke can until it was the diameter of a human hair, the letter O in the product name would be about 10 microns across.
Roach, Mary. Gulp: Adventures on the Alimentary Canal. W. W. Norton & Company, 2013, p. 55.
Mary Roach is an American author, specializing in popular science and humor. As of 2016, she has published seven books: Stiff: The Curious Lives of Human Cadavers (2003), Spook: Science Tackles the Afterlife (2005) (published in some markets as Six Feet Over: Adventures in the Afterlife), Bonk: The Curious Coupling of Science and Sex (2008), Packing for Mars: The Curious Science of Life in the Void (2010), My Planet: Finding Humor in the Oddest Places, Gulp: Adventures on the Alimentary Canal (2013), and Grunt: The Curious Science of Humans at War (2016).