Describes the history behind twenty household inventions including the refrigerator, toilet, microwave, and alarm clock.
Content Note
Air conditioner or refrigerator -- Shower or toilet -- Washing machine or dryer -- Electric iron or wire clothes hanger -- Dishwasher or vacuum cleaner -- Knife or fork -- Microwave oven or pop-up toaster -- Plastic cling wrap or aluminum foil -- Smoke alarm or home security system -- Alarm clock or electric light bulb -- Which comes next?