• Celery has negative calories; it takes more calories to eat a piece of celery than the celery has in it.• In 18th-century English gambling dens, there was an employee whose only job was to swallow the dice if there was a police raid. • The human tongue tastes bitter things with the taste buds toward the back. Salty and pungent flavors are tasted in the middle of the tongue, sweet flavors at the tip. • A sneeze can travel as fast as 100 mph. • It is impossible to sneeze and keep one’s eyes open at the same time. • In 1778, fashionable women of Paris never went out in blustery weather without a lightning rod attached to their hats. • In the Balanta tribe of Africa, a bride remained married until her wedding gown was worn out. If she wanted a divorce after two weeks, all she had to do was rip up her dress. This was the custom until about 20 years ago.