Our Changing Population
The Demograph is studded with electronically controlled lights that indicate not only births and deaths but also age and sex distributions, the trend toward metropolitan areas. and rates of future growth in the United States. Hanging above the map is the giant counter, which dramatizes the growth of the total U.S. population--at the rate of one person every 11 seconds--by displaying the current figure in numbers more than six feet high.

The World Explosion
Constantly rising totals on the world counter reflect the phenomenal speed at which the earth's population of more than three billion is increasing (at a rate of about two persons a second). An dccompanying map shows the distribution of the world population.

Interpreting The Figures
A narrator explains the significance of population growth and distribution in the coming years. Phones installed along the sides of the pavilion provide facts about the population of the United States in specific areas. Earphones near the map of the world furnish similar information on a global scale in a variety of foreign languages.