Most of what we study is based on facts, but scientists have to make educated guesses about prehistory. We call these guesses theories. Theories about prehistory often change as we make new discoveries about the past.
Many cultures and religious faiths have creation stories. Some people believe that God created the earth about six thousand years ago in six days, as explained in the Book of Genesis. They do not share the view of prehistory held by most scientists.
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Mr. Donn has an excellent website that includes
a section on Prehistory.
James Ussher was an Irish biblical scholar who wrote The Annals of the World in 1658. Through careful study of the Book of Genesis and other religious texts, Bishop Ussher concluded that God created the earth on Sunday, October 23, 4004BCE. Bishop Ussher stated that Adam and Eve were driven from the Garden of Eden on Monday, November 10, 4004BCE, and that Noah's Ark reached land on Wednesday, May 5, 1491BCE.
James Ussher 1581 – 1656)