One of the hottest areas in technology is invisible. Wireless communications allow people to transmit voice messages, data, and other signals through the air without physically connecting senders to receivers with cables or wires. And the technology is spreading at lightning speed. Cellular phones, personal digital assistants, and wireless…

World dilemmas such as poverty, immigration, globalization, technology, transportation, and transnational endeavors define the notion of "global village" in the same way that multicultural populations currently in all nations are described. No longer are nations as homogeneous as they were even a decade ago. In classroom settings the study of…