• Alarm clocks help keep people from oversleeping.
• The first alarm clock was the rooster on the farm.
• Alarm clocks today are usually plugged in, but some have a battery backup.
• When it is time for the alarm, a loud sound plays until it is switched off.
• Some alarm clocks today use a radio instead of a beep.

Aromatherapy

• Ancient Greeks, Egyptians, and Persians used plant oils for medicine and perfume.
• The French chemist Rene Maurice Gattefosse first used the term aromatherapy.
• The first aromatherapy book was published in 1977.
• Today aromatherapy is used all around the world.