Can you find important people in World Book for Kids?


worldbook for kidsDiscover interesting people of the past and present with Important People feature in World Book Online for Kids!

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Did you know recycled paper started in 1960?


raw materialsSince the beginning of the 20th century, the types and quantities of raw materials used by U.S. manufacturers and consumers have changed over time. The fact sheet Use of raw materials in the United States from 1900 through 2010 quantifies the amounts of those materials (other than food and fuel) that have been input into the U.S. economy annually for a period of 111 years, from 1900 through 2010. It provides a broad overview of all materials used but highlights the use and importance of raw nonfuel minerals in particular.