Varieties of Creationism
Organized opposition to the teaching of evolution began in the 1920s and continues to the present, although scientific debate about common descent of all living things was over by the 1880s. As discussed in this article by Eugenie C. Scott, there are many varieties of creationism which reject evolution.
Anti-evolution episodes can be small or large, short or enduring, largely private or largely public. In some cases, these episodes result in legal battles and lawsuits, even reaching the United States Supreme Court. See our special section on Creationism and the Law to learn about major legal cases concerning evolution education.
When most people hear the word "creationism," they probably think of the variety called Young Earth Creationism (YEC). Young Earth Creationists adopt a method of Biblical interpretation which requires that the earth be no more than 10,000 years old, and that the six days of creation described in Genesis each lasted for 24 hours. Young Earth Creationists believe that the origin of the earth, the universe, and various forms of life, etc., are all instances of special creation.
Here is a sampling of links to websites representing a variety of forms of creationism, including young-earth, old-earth, and "intelligent design" creationism.