What is technology? -- Technology behind everyday appliances -- How does a screw work? -- What is a toilet's s-bend? -- What makes a lightbulb light up? -- How does a zipper work? -- Why do you put water in an iron? -- How does a refrigerator keep things cold? -- Does a vacuum flask keep things hot or cold? -- How does a can opener work? -- What keeps non-stick frying pans from sticking? -- How does a television signal travel through the air? -- How do cell phones work? -- Why doesn't a microwave oven get hot? -- How were Liquid Paper and Post-It Notes invented?