Describes how people have handled household tasks such as dusting, sweeping, and trash disposal since the Stone Age and discusses the invention of such cleaning items as the vacuum cleaner and dishwasher, the discovery of soap, and more.
Describes how messages have been sent throughout history, from the use of smoke signals and messengers to modern use of electronic means of communication, including fax and e-mail.
Discusses how time was measured in the past, various early clocks, the invention of the calendar, and such related topics as time zones and radio time.